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LNF Theory Group– June 2012

LNF Theory Group– June 2012. Human Capital. 7 Ten. Res. [ Bellucci, Benfatto, Corcella, Del Duca, Lombardo, Nardi, Isidori ] 1 Non Ten. Res. [ Yeranyan ] Three yrs. ago we were 12 ( 10 TRs + 2 NTRs ) ... Only 1 TR under 40, Last INFN AR for theory@LNF given 2008!. +.

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LNF Theory Group– June 2012

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  1. LNF Theory Group– June 2012 Human Capital • 7 Ten.Res. [Bellucci, Benfatto, Corcella, Del Duca, Lombardo, Nardi, Isidori] • 1 Non Ten. Res. [Yeranyan ] • Three yrs. ago we were12 (10 TRs + 2 NTRs)... • Only 1 TR under 40, Last INFN AR for theory@LNF given 2008! + 6 Postdocs [1 supported by external funds (Fermi Inst.)] 5 Senior Associates + 10 Associates from outside LNF + ̴ 15 frequent visitors from outside LNF, supported by INFN invitation funds: NEW RULES 2013, Director rather than CSN4!

  2. LNF Theory Group– June 2012 Research activity Theory Nat. projects (Iniziative Specifiche) at LNF I.S.Loc. (Nat.)FTE Topics Spokesperson LF61 Bellucci 11.2 [Complex systems] Methods in Cond. Mat. Phys., MI12 Bellucci 7.7 [Fields/Strings] Supersymmetry, supergravity, BH LF21 Isidori 5.5 [Phenomenology] Flavor Physics, Physics at LHC FA51 Nardi 2.0 [Astroparticles] Leptogenesis, neutrino physics MI11 Lombardo 2.0 [Fields/Strings] Lattice, QCD at finite T

  3. LF61 - S. Bellucci (nat. spokesperson) + M. Benfatto, M. Cini, G. Giannini, K. Hatada, K. Hayakawa, C. Natoli, L. Pierantoni, F. Palumbo, N. Pugno, G. Stefanucci Main research issues Synchrotron Radiation Spectroscopies and the Physics of Strongly Correlated Electron Systems, Including Low-dimensional and Nanostructured Materials. LNF activities in 2011 • Theoretical simulation on the basis of generalized Maxwell Garnett theory proved that • the shielding effectiveness of the carbon based nanocomposites in microwaves is determined • mostly by the conductivity of nanocarbon inclusions. • Junctions between the carbon nanotubes (CNTs) and contacting metallic elements of a • Nanocircuit. Numerical simulations on the contacts conductance and resistance have been performed • with multiple scattering theory and the effective media cluster approach. Two models for CNT-metal • contacts have been considered in our collaboration: a) first principles "liquid metal“ model and • b) semi-empirical model of "effective bonds" based on Landauer notions on ballistic conductivity. • Within the density functional theory we compared the atomic electronic structure of both • perfect and nanostructured Ni(111) surfaces; we performed first principles simulations on both • atomically smooth and nanostructured Ni(111) surfaces using two different ab initio approaches: • the linear combination of atomic orbitals and (ii) the projector augmented plane waves. The • magnetic moment and the effective charge of outer atoms in Ni nanoparticles increase as compared • to those for the smooth Ni(111) surface. The calculated electronic charge redistribution in the Ni • nanoclusters features them as possible adsorption centers with increasing catalytic activity. • Ab initio DFT calculations on gradually growing 2D periodic models of capped single-wall • CNTs upon their perpendicular junctions with the Ni(111) substrate, in order to understand • peculiarities of the initial stage of their growth on either smooth or nanostructured catalytic particles.

  4. LF61 - S. Bellucci (nat. spokesperson) + M. Benfatto, M. Cini, G. Giannini, K. Hatada, K. Hayakawa, C. Natoli, L. Pierantoni, F. Palumbo, N. Pugno, G. Stefanucci LNF activities in 2011 • Electron transport for a spin polarized current through a ballistic quantum nanojunction formed • by two quantum dots (QDs) and a semiconducting quantum wire. Just one electron with a given spin • polarization fills each QD and the stationary binary digit consists of the spin-up and spin-down of • a single electron. The spin polarizations of those electrons are the two inputs of the gates. Compute AND, • XOR, XNOR, and NOR gate response, beginning with the low bias conductance-energy characteristic in • ballistic regime. For an appropriate choice of the working Fermi energy and of the distance between QDs, • a high output current (in the logical sense) appears for certain combinations of the inputs while it vanishes • for others. Demonstrated the logic gate behavior designing a spintronic logic operator at the nanoscale. • Multiple scattering is a method of solving the Schrodinger equation not only for bound states • but also for scattering states. As such can be effectively used to calculate many electron spectroscopies, • including all those cases in which the excited electron is not observed but is virtual (as in absorption • and resonant scattering). A package to calculate these various spectroscopies has been prepared. • A general method to apply multiple scattering theory to describe ground state properties of • correlated systems in the framework of the multi-channel multiple scattering theory, an extension of • the model applied to excited states to calculate spectroscopic response functions in correlated systems • Calculated the Fe K-edge absorption spectrum of iron Phtalocyanin deposited on a substrate in • order to establish the stacking geometry of the various molecules. The simulations favor a geometry similar • to what found in cobalt phthalocyanine. • Scissors modes were predicted in the framework of the Two-Rotor Model. The model has an • intrinsic harmonic spectrum, so that the level above the Scissors Mode, the first overtone, has excitation • energy twice that of the Scissors Mode. Since the latter is of the order of 3 MeV in the rare earth region, • the energy of the overtone is below threshold for nucleon emission, and its width should remain small • enough for the overtone to be observable.

  5. LF61 - S. Bellucci (nat. spokesperson) + M. Benfatto, M. Cini, G. Giannini, K. Hatada, K. Hayakawa, C. Natoli, L. Pierantoni, F. Palumbo, N. Pugno, G. Stefanucci Recent publications S. Bellucci and P. Onorato, Transport Properties in Carbon Nanotubes, in Physical Properties of Ceramic and Carbon Nanoscale Structures, Lecture Notes in Nanoscale Science and Technology Volume 11: Physical Properties of Ceramic and Carbon Nanoscale Structures:The INFN Lectures - Vol II, Bellucci, S. ed., 2011, p. 45-110. Fermionic condensate in a conical space with a circular boundary and magnetic flux. S. Bellucci, E.R.Bezerra de Mello, A.A. Saharian, Phys. Rev. D 83, 085017 (2011). e-Print: arXiv:1101.4130 [hep-th] “Theoretical simulations on the inter-shell interactions in double-wall CNTs of different morphology”, S. Piskunov, V. Kashcheyevs, Y. Zhukovskii, S. Bellucci, Computational and Theoretical Chemistry, 2011; Crystal-Assisted Beam Extraction and Collimation at the U-7 Circular Accelerator. A.G. Afonin et al. Instrum.Exp.Tech.54:1-7,2011. e-Print: arXiv:1102.2711 [physics.acc-ph] External field influence on semiflexible macromolecules: geometric coupling. S. Bellucci, Y. Mamasakhlisov, A. Nersessian, Mod. Phys. Lett. B 22 (2011) 1809-1819, e-Print: arXiv:1011.0644 [cond-mat.soft] Quantum ring models and action-angle variables. S. Bellucci, A. Nersessian, A. Saghatelian, V. Yeghikyan, Journal of Computational and Theoretical Nanoscience, 8 (2011) pp. 769-775(7) e-Print: arXiv:1008.3865 [cond-mat.mtrl-sci] Y. N. Shunin, Y. F. Zhukovskii, V. I. Gopejenko, N. Burlutskaya, BELLUCCI S. (2011). Ab Initio Simulations on Electric Properties for Junctions Between Carbon Nanotubes and Metal Electrodes. NANOSCIENCE AND NANOTECHNOLOGY LETTERS, vol. 3; p. 816-825, ISSN: 1941-4900. Quantum nanojunctions as spintronic logic operators: Gate response in a two input ballistic interferometer. S. Bellucci and P. Onorato. J. Appl. Phys. 109, 123715 (2011); http://dx.doi.org/10.1063/1.3598127 (6 pages). Differential Geometry in DNA Molecules. Bellucci, S.; Mamasakhlisov, Y.; Nersessian, A.. Nanoscience and Nanotechnology Letters, Volume 3, Number 6, November 2011 , pp. 922-926(5).

  6. LF61 - S. Bellucci (nat. spokesperson) + M. Benfatto, M. Cini, G. Giannini, K. Hatada, K. Hayakawa, C. Natoli, L. Pierantoni, F. Palumbo, N. Pugno, G. Stefanucci Recent publications Zhukovskii YF, Piskunov S, Kotomin EA, BELLUCCI S. (2011). Simulations on the mechanism of CNT bundle growth upon smooth and nanostructured Ni as well as theta-Al(2)O(3) catalysts CENTRAL EUROPEAN JOURNAL OF PHYSICS, vol. 9; p. 530-541, ISSN: 1895-1082, doi: 10.2478/s11534-010-0079-8. BELLUCCI S., A. Malesevic, F. Micciulla, I. Sacco, R. Kemps, A. Vanhulsel, and C. Van Haesendonck (2011). Comparative Field Emission from Vertically Aligned Few-Layer Graphene and Carbon Nanotubes. NANOSCIENCE AND NANOTECHNOLOGY LETTERS, vol. 3; p. 907-912, ISSN: 1941-4900. Shunin YN, Zhukovskii YF, Burlutskaya N, BELLUCCI S. (2011). Resistance simulations for junctions of SW and MW carbon nanotubes with various metal substrates RID C-7063-2011 RID C-9235-2011. CENTRAL EUROPEAN JOURNAL OF PHYSICS, vol. 9; p. 519-529, ISSN: 1895-1082, doi: 10.2478/s11534-010-0086-9 Yu.N. Shunin, Yu.F. Zhukovskii, N. Burlutskaya, BELLUCCI S. (2011). Theoretical Simulations on Electric Properties of CNT-Me and GNR-Me Interconnects Using Effective Media Approach. In: Proceedings of the 2nd European Future Technologies Conference and Exhibition 2011 (FET 11), vol. 7, p. 343-345 On the thermalization of a Luttinger liquid after a sequence of sudden interaction quenches. E. Perfetto, G. Stefanucci. EPL Volume 95 Issue 1 Year 2011, p. 10006. Magnetically induced pumping and memory storage in quantum rings. M. Cini, E. Perfetto. PHYSICAL REVIEW B, Volume 84 Issue 24 Year 2011 Insight on Hole-Hole Interaction and Magnetic Order from Dichroic Auger-Photoelectron Coincidence Spectra. M. Cini, E. Perfetto et al., PHYSICAL REVIEW LETTERS, Volume 107 Issue 21 Year 2011 Origin of the pre-peak features in the oxygen K-edge x-ray absorption spectra of LaFeO(3) and LaMnO(3) studied by Ga substitution of the transition metal ion. Lafuerza, S., Subias, G., Garcia, J., Di Matteo, S. Blasco, J., Cuartero, V., Natoli C., JOURNAL OF PHYSICS-CONDENSED MATTER, Volume 23 Issue 32 Year 2011

  7. LF61 - S. Bellucci (nat. spokesperson) + M. Benfatto, M. Cini, G. Giannini, K. Hatada, K. Hayakawa, C. Natoli, L. Pierantoni, F. Palumbo, N. Pugno, G. Stefanucci Recent publications MsSpec-1.0: A multiple scattering package for electron spectroscopies in material science. Sebilleau, D.; Natoli, C.; Gavaza, G. M.; Zhao, H.; Da Pieve, F.; Hatada, K., Computer Physics Communications 182 (2011) Issue 12 Scissors modes: The first overtone, Hatada K, Hayakawa K, Palumbo F, Phys. Rev. C 84 (2011) 011302(R) Atomic and electronic structure of both perfect and nanostructured Ni(111) surfaces: First-principles calculations. S. Piskunov, G. Zvejnieks, Y. F. Zhukovskii, S. Bellucci, Thin Solid Films, 519 (2011) 3745–3751 “Atomic carbon adsorption on flat and nano-structured Ni catalyst with further CNT growth: predictions from first principles calculations”, Y. Zhukovskii, S. Piskunov, E. Kotomin, S. Bellucci, Physica E, 2011. “CNT-metal interconnects: Electronic structure calculations and resistivity simulations”, Y. Shunin, Y. Zhukovskii, N. Burlutskaya, S. Bellucci, Journal of Nano-electronic and Optoelectronic, 2011; A.-M. Uimonen, E. Khosravi, A. Stan, G. Stefanucci, S. Kurth, R. van Leeuwen, and E. K. U. Gross Comparative study of many-body perturbation theory and time-dependent density functional theory in the out-of-equilibrium Anderson model. Phys. Rev. B 84, 115103 (2011). Towards a Description of the Kondo Effect Using Time-Dependent Density-Functional Theory. G. Stefanucci and S. Kurth. Phys. Rev. Lett. 107, 216401 (2011) Time-dependent bond-current functional theory for lattice Hamiltonians: Fundamental theorem and application to electron transport, S. Kurth, G. Stefanucci. Chemical Physics 391 (2011) 164–172 Circulating Currents and Magnetic Moments in Quantum Rings. Cini, M.; Perfetto, E.; Stefanucci, G.. Nanoscience and Nanotechnology Letters, Volume 3, Number 6, November 2011 , pp. 902-906(5). Initial Correlation Effects in Time-Dependent Transport with One-Dimensional Interacting Leads Perfetto, E.; Stefanucci, G.; Cini, M., Nanoscience and Nanotechnology Letters, 3 (2011)877-881.

  8. LF61 - S. Bellucci (nat. spokesperson) + M. Benfatto, M. Cini, G. Giannini, K. Hatada, K. Hayakawa, C. Natoli, L. Pierantoni, F. Palumbo, N. Pugno, G. Stefanucci Recent publications Evidence for the collapse of short-range magnetic order in CoO at the Neel temperature. R. Gotter, F. Offi, A. Ruocco, F. Da Pieve, R. Bartynski, M. Cini and G. Stefani, 2011 EPL 94 37008. The theory of multiple peeling. N. M. Pugno. International Journal of Fracture, 171 (2011) 185-193. The X-ray Absorption Spectroscopic Model of the Copper(II) Imidazole Complex Ion in Liquid Aqueous Solution: a Strongly Solvated Square Pyramid, P. Frank, M. Benfatto, B. Hedman, and K. O. Hodgson, Inorg. Chem., 2012, 51 (4), pp 2086–2096. Interacting resonant-level model with long-range interactions: Fast screening and suppression of the zero-bias conductance. E. Perfetto, G. Stefanucci, M. Cini. PHYSICAL REVIEW B 85 , 165437 (2012). Correlation effects in bistability at the nanoscale: Steady state and beyond. E. Khosravi A.-M. Uimonen, A. Stan, G. Stefanucci, S. Kurth, R. van Leeuwen, and E. K. U. Gross. Phys. Rev. B 85, 075103 (2012). Epoxy Resin/SWCNT Shielding Paint for Super-High-Frequency Range, Paddubskaya, A.; Bychanok, D.; Plyushch, A.; Kuzhir, P.; Nemilentsau, A.; Maksimenko, S.; Bellucci, S.; Coderoni, L.; Micciulla, F.; Sacco, I.; Rinaldi, G.; Macutkevic, J.; Seliuta, D.; Valusis, G.; Banys, J., Journal of Nanoelectronics and Optoelectronics, Volume 7, Number 1, January 2012 , pp. 81-86 CNT-Metal Interconnects: Electronic Structure Calculations and Resistivity Simulations. Shunin, Yu. N.; Zhukovskii, Yu. F.; Burlutskaya, N.; Bellucci, S. Journal of Nanoelectronics and Optoelectronics, 7 (2012) 3-11. Comparative cyto-genotoxicity assessment of functionalized and pristine multiwalled carbon nanotubes on human lung epithelial cells. C. L. Ursini, D. Cavallo, A. M. Fresegna, A. Ciervo, R. Maiello, G. Buresti, S. Casciardi, F. Tombolini, S. Bellucci, S. Iavicoli. Toxicology in vitro, Available online 25 May 2012.

  9. LF61 - S. Bellucci (nat. spokesperson) + M. Benfatto, M. Cini, G. Giannini, K. Hatada, K. Hayakawa, C. Natoli, L. Pierantoni, F. Palumbo, N. Pugno, G. Stefanucci Recent publications Steering of sub- GeV charged particle beams by use of reflections in thin crystal targets. S Bellucci, Yu A Chesnokov, P N Chirkov, G Giannini, V A Maisheev and I A Yazynin. 2012 JINST 7 P03008. Nanocarbon Modified Epoxy Resin and Microwaves. A. Pliushch, A. Paddubskaya, P. Kuzhir, S. Maksimenko, L. Coderoni, F. Micciulla, I. Sacco, S. Bellucci. Fullerenes, Nanotubes and Carbon Nanostructures 20 (2012) 496-501 Terahertz time domain spectroscopy of epoxy resin composite with various carbon inclusions. J. Macutkevic, D. Seliuta, G. Valusis, R. Adomavicius, P. Kuzhir, A. Paddubskaya, M. Shuba, S. Maksimenko, L. Coderoni, F. Micciulla, I. Sacco, S. Bellucci. Chemical Physics Available online 10 February 2012 D. Cavallo, C. Fanizza, C. L. Ursini, S. Casciardi, E. Paba, A. Ciervo, A. M. Fresegna, R. Maiello, A. M. Marcelloni, G. Buresti, F. Tombolini, S. Bellucci, S. Iavicoli.Multi-walled carbon nanotubes induce cytotoxicity and genotoxicity in human lung epithelial cells. Journal of Applied Toxicology 32 (2012) 454–464. Investigating the role of hierarchy on the strength of composite materials: evidence of a crucial synergy between hierarchy and material mixing. F. Bosia , T. Abdalrahman and N. M. Pugno.Nanoscale, 2012, 4, 1200-1207. Hierarchical fiber bundle model to investigate the complex architectures of biological materials. N. M. Pugno, F. Bosia , T. Abdalrahman, Phys. Rev. E 85, 011903 (2012). Towards the Artsutanov's dream of the space elevator: The ultimate design of a 35 GPa strong tether thanks to graphene. N. M. Pugno. Acta Astronautica. Available online 25 February 2012 In-plane elastic buckling of hierarchical honeycomb materials. Q. Chen, N. M. Pugno. European Journal of Mechanics – A/Solids, Volume 34, July–August 2012, Pages 120–129. Mechanics of hierarchical 3-D nanofoams. Q. Chen, N. M. Pugno. 2012 EPL 97 26002

  10. LF61 - S. Bellucci (nat. spokesperson) + M. Benfatto, M. Cini, G. Giannini, K. Hatada, K. Hayakawa, C. Natoli, L. Pierantoni, F. Palumbo, N. Pugno, G. Stefanucci External fundings Research also supported by MIUR (PRIN 2008) DENSE, Development and Electromagnetic Characterization of Nano Structured Carbon Based Polymer CompositEs. DENSE has a duration of 36 months and started its activities on 1st January 2010. The consortium binds together INFN-LNF and three Universities (with four different Departments): Univ. Roma La Sapienza, Università degli Studi di SALERNO, Università degli Studi di PALERMO. And supported by the Coordination and support actions of the FP7-INCO-2010-6, BY-NanoERA (Institutional Development of Applied Nanoelectromagnetics), with a duration of 36 months. It started its activities on 1st January 2011. The consortium binds together INFN-LNF and four Universities, one Research Organizations and an industry (Science & Technology Park): Institute of Nuclear Problems of Belarusian State University, Institut fuer Festkoerperphysik, Technische Universitaet Berlin, Central Laboratory of Physico-Chemical Mechanics, Bulgarian Academy of Sciences, Sofia, Institute of Electronic Structure and Laser (IESL), Heraklion, Crete, Belarusian Institute of System Analysis and Information Support of Scientific Technical Sphere, Science & Technology Park “Metolit” at Belarusian National Technical University. And supported by MIUR (PRIN 2008) Auger spectroscopy of low-dimensional magnetic systems: electron correlation and dichroism. Three Universities and one research institute

  11. Atomistic simulations of defect containing tubular nanostructures

  12. Calculations on Ni/CNT: The model (n,n) n=5,6; and (n,0) n = 10, 11, 12; CNTs are studied. Ni filament in FM groundstate.

  13. Ni/CNT calculations: Main results Ni/CNT(5,5) and Ni/CNT(10,0) are the most energetically stable structures.

  14. CNT(5,5) and CNT(10,0) with Ni filament Ni/CNT (5,5) Armchair Ni/CNT (10,0) Zig-zag Ni/CNT (10,0) tend to form Ni clusters.

  15. CNT(5,5) and CNT(10,0): PDOS Both Ni/CNT structures are conductive ferromagnetic materials. Band gap of zig-zag CNT is closed by Ni-filament d-states.

  16. CNT(5,5) and CNT(10,0): PDOS Ni/CNT(5,5) – front and side views of differential electronic charge density map. stronger charge density redistribution after insertion of Ni filament results in energetically more stable structure. Front and side views of differential electronic charge density maps for Ni/CNT(10,0).

  17. Point defects in BNNTs: computational details CRYSTAL-09 code have been used in this study for large-scale ab initio LCAO calculations on BN nanotubes (BNNTs), using hybrid (DFT-HF) PBE0 Hamiltonian. 60 atoms in unit cell, ||Hk|| diagonalizationon 6 IBZ k-points. BN bulk (surface) properties: a)averaged effective charges qNare the same as qB, with opposite sign, b) ,where Enis the total n-layer slab energy per primitive surface unit cell and S its area, while Ebis the total energy per primitive bulk unit cell.

  18. B substitutes in BNNT (5,5): PDOS LCAO – Linear Combination of Atomic orbitals LACW – Linear Augmented Cylindrical Waves GaB/BNNT(5,5) InB/BNNT(5,5) AlB/BNNT(5,5)

  19. N substitutes in BNNT (5,5): PDOS AsN/BNNT(5,5) SbN/BNNT(5,5) PN/BNNT(5,5) Defect induced N levels

  20. SbN/BNNT GaB/BNNT(5,5): Differential charge density maps Sb Ga B N Schematic repre-sentation of the equilibrium unit cell of SbN/BNNT (left) and GaB/BNNT right. High polarization in the vicinity of the defect.

  21. Conclusions Using reliable and effective ab initio calculations schemes, we consider monoatomic chains of nickel atoms encapsulated into the CNTs of (n,0) and (n,n) chiralities with varied n indices. Our calculations show that CNTs with Ni filament exhibit metallic FM behavior, even if the pristine nanotube is semiconducting. Therefore, we predict that the encapsulation of a Ni filament inside CNTs is a way for the reliable realization of stable conductive quasi-one-dimensional hybrid nanostructures. In BNNTs with (5,5) chiralities we consider P, As, Sb substitutions for the host N atom while In, Ga and Al substitute the host boron. The band gap of the BNNTs is virtually closed, due to the effect imposed by Sb, while the introduction of the In, Ga or Al atom in the BNNT results in a minor increase of its band gap. The obtained results can help to understand better the optical and photoelectron spectroscopy experiments, as well as the measured electrical properties of the doped BNNTs.

  22. We studied the time-dependent quantum transport between Luttinger liquids and contrasted the trends with a 1) initally contacted versus uncontacted L and R subsystems 2) Initially interacting versus initially noninteracting systems

  23. thought experiment on Magnetic moments of ballistic Rings

  24. Example: triangular ring with m=-1. Present theory:Iring compared with a semiclassical theory. Slope=0 for U=0 0.04 1 0.0 -2 2 0 -0.02 0.0 0.5 1.0 1.5 U 26 26

  25. Law: when the circuit is biased the linear response current in the ring is always laminar and produces no magnetic moment Classically the magnetic moment should be proportional to the bias and to the current flowing in the external wires. The circulating current which produces the magnetic moment is localized and does not shift charge from one lead to the other, contrary to semiclassical formula. 27

  26. See also: Cini-Perfetto-Stefanucci,PHYSICAL REVIEW B 81, 165202 (2010) 28 28

  27. Auger-photoelectron coincidence spectra of CoO with both electrons taken at different angles show differences below the Neel temperature. The effect disappears in the paramagnetic phase. Our theory reveals the different components of the spectrum. Thus Auger spectroscopy is a local probe of magnetism.

  28. MI12 - S. Bellucci (loc. spokesperson) + S. Ferrara (senior ass.), A. Latini (ass.), A. Marrani (ass.), E. Orazi (ass.), M. Samsonyan (ass.), A. Shcherbakov (LNF INFN PostDoc), V. Yeghikyan (LNF INFN PostDoc), A. Yeranyan Main research issues GAUGE AND STRING THEORIES LNF activities in 2011

  29. MI12 - S. Bellucci (loc. spokesperson) + S. Ferrara (senior ass.), A. Latini (ass.), A. Marrani (ass.), E. Orazi (ass.), M. Samsonyan (ass.), A. Shcherbakov (LNF INFN PostDoc), V. Yeghikyan (LNF INFN PostDoc), A. Yeranyan Recent Publications State-space manifold and rotating black holes. Stefano Bellucci and Bhupendra Nath Tiwari. Journal of High Energy Physics Volume 2011, Number 1, 118, DOI: 10.1007/JHEP01(2011)118 Topics in cubic special geometry. Stefano Bellucci, Alessio Marrani, and Raju Roychowdhury. J. Math. Phys. 52, 082302 (2011); http://dx.doi.org/10.1063/1.3622851 (29 pages). N=4, d=1 supersymmetric hyper-K?hler sigma models with isospin variables. Stefano Bellucci, Sergey Krivonos and Anton Sutulin. Journal of High Energy Physics Volume 2011, Number 2, 38, DOI: 10.1007/JHEP02(2011)038. Strong Interactions, (De)coherence and Quarkonia. Stefano Bellucci, Vinod Chandra and Bhupendra Nath Tiwari. J. Phys.: Conf. Ser. 335 (2011) 012062 doi:10.1088/1742-6596/335/1/012062. N=2 supersymmetric particle near extreme Kerr throat. Stefano Bellucci and Sergey Krivonos. Journal of High Energy Physics Volume 2011, Number 10, 14, DOI: 10.1007/JHEP10(2011)014. Five-dimensional N=4 supersymmetric mechanics. Stefano Bellucci, Sergey Krivonos, Anton Sutulin. Proceedings of 19th International Colloquium On Integrable Systems And Quantum Symmetries (ISQS-19), 17-19 Jun 2010, Prague, Czech Republic, e-Print: arXiv:1012.2253 [hep-th] Split attractor flow in N=2 minimally coupled supergravity, Sergio Ferrara, Alessio Marrani, Emanuele Orazi, Nuclear Physics B Volume 846, Issue 3, 21 May 2011, Pages 512–541 4D localization in Randall-Sundrum 2 supergravity and in Vasiliev theories, S. Ferrara, M. Porrati, Physics Letters B, Volume 704, Issue 3, 13 October 2011, Pages 249–254 Attractors and first order formalism in five dimensions revisited, S. Bellucci, S. Ferrara, A. Shcherbakov, A. Yeranyan, Phys. Rev. D 83, 065003 (2011)

  30. MI12 - S. Bellucci (loc. spokesperson) + S. Ferrara (senior ass.), A. Latini (ass.), A. Marrani (ass.), E. Orazi (ass.), M. Samsonyan (ass.), A. Shcherbakov (LNF INFN PostDoc), V. Yeghikyan (LNF INFN PostDoc), A. Yeranyan Recent Publications BLACK STRINGS, BLACK RINGS AND STATE-SPACE MANIFOLD, Bellucci, Stefano; Tiwari, Bhupendra Nath, International Journal of Modern Physics A, Volume 26, Issue 32, pp. 5403-5464 (2011). CP(n) supersymmetric mechanics in U(n) background gauge fields. Stefano Bellucci, Sergey Krivonos, Anton Sutulin, Phys. Rev. D84 (2011) 065033, e-Print: arXiv:1106.2435 [hep-th] N=4, d=1 Supersymmetric Hyper-Kaehler Sigma Models and Non-Abelian Monopole Background. Stefano Bellucci, Sergey Krivonos, Anton Sutulin, Published in JHEP 1102 (2011) 038. Extended SUSY quantum mechanics: transition amplitudes and path integrals, Bastianelli, Fiorenzo et al., JOURNAL OF HIGH ENERGY PHYSICS, 2011, 1106-023 ON THE THERMODYNAMIC GEOMETRY OF HOT QCD, Bellucci, Stefano et al., Int.J.Mod.Phys.A26:43-70,2011 Freudenthal duality and generalized special geometry, Ferrara, Sergio et al., Physics Letters B 701, 2011, 640–645 GEOMETRIC IIA SUPERGRAVITY THEORIES IN THE STRING FRAME, Nicoletti, Riccardo; Orazi, Emanuele, International Journal of Modern Physics A, Volume 26, Issue 26, pp. 4585-4602 (2011). ON ATTRACTOR FLOW AND SMALL BLACK HOLES, Sanjay Siwach, Bhupendra Nath Tiwari, Mod.Phys.Lett.A26:967-974,2011 ON REAL INTRINSIC WALL CROSSINGS, S. Bellucci, B. N. Tiwari, INT J MOD PHYS A 26 (2011) 5171-5209 On the black-hole/qubit correspondence, L. Borsten, M.J. Duff, A. Marrani, W. Rubens, Eur.Phys.J.Plus 126:37,2011 Four curious supergravities. M.J. Duff, S. Ferrara, Phys.Rev.D83:046007,2011.

  31. MI12 - S. Bellucci (loc. spokesperson) + S. Ferrara (senior ass.), A. Latini (ass.), A. Marrani (ass.), E. Orazi (ass.), M. Samsonyan (ass.), A. Shcherbakov (LNF INFN PostDoc), V. Yeghikyan (LNF INFN PostDoc), A. Yeranyan Recent Publications Generalized mirror symmetry and trace anomalies. M.J. Duff, S. Ferrara, Class.Quant.Grav.28:065005,2011. Quaternionic Kahler Detour Complexes and N=2 Supersymmetric Black Holes, D. Cherney, E. Latini and A. Waldron, Communications in Mathematical Physics, Volume 302, Number 3, 843-873 Small black hole constituents and horizontal symmetry, Ceresole, Anna et al., J HIGH ENERGY PHYS , Volume 2011, Number 6, 78 Superconformal symmetry, NMSSM, and inflation. Ferrara, Sergio et al. Phys. Rev. D 83, 025008 (2011) THERMODYNAMIC GEOMETRIC STABILITY OF QUARKONIA STATES, Bellucci, Stefano et al., Int.J.Mod.Phys.A26:2665-2724,2011 Two-center black holes duality-invariants for stu model and its lower-rank descendants, Ferrara, Sergio et al., J. Math. Phys. 52, 062302 (2011) Creation of matter in the universe and groups of type E7, Sergio Ferrara and Renata Kallosh, Journal of High Energy Physics Volume 2011, Number 12, 96. Black Holes and First Order Flows in Supergravity, L. Andrianopoli, R. D’Auria, S. Ferrara and M. Trigiante, Supersymmetry in Mathematics and Physics, Lecture Notes in Mathematics, 2011, Volume 2027/2011, 17-43 Two-centered magical charge orbits, Andrianopoli, Laura et al., Phys. Rev. D 83, 025008 (2011) SU(2) reductions in N = 4 multidimensional supersymmetric mechanics. Stefano Bellucci, Sergey Krivonos, Anton Sutulin, Journal of physics. A, Mathematical and theoretical, 2012, vol. 45, no12, [125402.1-125402.12]

  32. LF21 - G. Isidori (nat. spokesperson) + G. Corcella, V. Del Duca, J. Jones (pdoc), G. Pancheri (senior ass.), O. Shekhovtsova (Ass.) Main research issues 1) Higgs mass implications on the stability of the electroweak vacuum 2) U(2) and Minimal Flavour Violation in Supersymmetry 3) A toy-model to explain the large t-tbar FB asymmetry observed at Tevatron 4) The one-loop six-dimensional hexagon integral with three massive corners 5) Investigation of the infrared structure of gauge theory amplitudes in the high-energy limit LNF activities in 2011 We have updated the stability and metastability bounds of the Standard Model electroweak vacuum in view of the recent LHC results pointing toward the existence of a Higgs boson, with mass in the range 124-126 GeV. For a Higgs boson mass in such range, and for the current central values of the top mass and strong coupling constant, the Higgs potential develops an instability around 10^11 GeV, with a lifetime much longer than the age of the Universe. However, taking into account theoretical and experimental errors, stability up to the Planck scale cannot be excluded. Stability at finite temperature implies an upper bound on the reheat temperature after inflation, which depends critically on the precise values of the Higgs and top masses. A Higgs mass in the range 124--126 GeV is compatible with very high values of the reheating temperature, without conflict with mechanisms of baryogenesis such as leptogenesis. We have derived an upper bound on the mass of heavy right-handed neutrinos by requiring that their Yukawa couplings do not destabilize the Higgs potential.

  33. LF21 - G. Isidori (nat. spokesperson) + G. Corcella, V. Del Duca, J. Jones (pdoc), G. Pancheri (senior ass.), O. Shekhovtsova (Ass.) Main research issues 1) Higgs mass implications on the stability of the electroweak vacuum 2) U(2) and Minimal Flavour Violation in Supersymmetry 3) A toy-model to explain the large t-tbar FB asymmetry observed at Tevatron 4) The one-loop six-dimensional hexagon integral with three massive corners 5) Investigation of the infrared structure of gauge theory amplitudes in the high-energy limit LNF activities in 2011 Rather than sticking to the full U(3)^3 approximate flavour symmetry normally invoked in Minimal Flavour Violation, we have analyzed the consequences on the current flavour data of a suitably broken U(2)^3 flavour symmetry acting on the first two generations of quarks and squarks. A definite correlation emerges between the Delta F=2 amplitudes for K0, Bd, and Bs mixing, which can resolve the current tension between between SM predictions and experimental data in the so-called CKM fits. In particular, the CP violating asymmetry in $B_s \to \psi \phi$ is predicted to be positive and above its Standard Model value ($0.05 \lsim S_{\psi\phi} \lsim 0.2$). The preferred region for the gluino and the left-handed sbottom masses is below about $1\div 1.5$ TeV. An existence proof of a dynamical model realizing the $U(2)^3$ pictured has been outlined.

  34. LF21 - G. Isidori (nat. spokesperson) + G. Corcella, V. Del Duca, J. Jones (pdoc), G. Pancheri (senior ass.), O. Shekhovtsova (Ass.) Main research issues 1) Higgs mass implications on the stability of the electroweak vacuum 2) U(2) and Minimal Flavour Violation in Supersymmetry 3) A toy-model to explain the large t-tbar FB asymmetry observed at Tevatron 4) The one-loop six-dimensional hexagon integral with three massive corners 5) Investigation of the infrared structure of gauge theory amplitudes in the high-energy limit LNF activities in 2011 We have analyzed a simple Standard Model (SM) extension with only two new light fields: a scalar partner of the top (stop) (with mass above m_t) and a light neutral fermion chi^0 (with mass of a few GeV), coupled to SM quarks via a Yukawa interaction. We have shown that such model can lead to a significant enhancement of the forward-backward asymmetry in t tbar production at the Tevatron via the additional t tbar pairs produced from (stop anti-stop) decays. The model satisfies existing constraints on new-physics searches both at low and high energies, and could even address the cosmological dark-matter abundance. The implications of this model for future searches at the LHC have also been briefly outlined.

  35. LF21 - G. Isidori (nat. spokesperson) + G. Corcella, V. Del Duca, J. Jones (pdoc), G. Pancheri (senior ass.), O. Shekhovtsova (Ass.) Main research issues 1) Higgs mass implications on the stability of the electroweak vacuum 2) U(2) and Minimal Flavour Violation in Supersymmetry 3) A toy-model to explain the large t-tbar FB asymmetry observed at Tevatron 4) The one-loop six-dimensional hexagon integral with three massive corners 5) Investigation of the infrared structure of gauge theory amplitudes in the high-energy limit LNF activities in 2011 We have computed the six-dimensional hexagon integral with three non-adjacent external masses analytically. After a simple rescaling, it is given by a function of six dual conformally invariant cross-ratios. The result can be expressed as a sum of 24 terms involving only one basic function, which is a simple linear combination of logarithms, dilogarithms, and tri-logarithms of uniform degree three transcendentality. Our method uses differential equations to determine the symbol of the function, and an algorithm to reconstruct the latter from its symbol. It is known that six-dimensional hexagon integrals are closely related to scattering amplitudes in N=4 super Yang-Mills theory, and we therefore expect our result to be helpful for understanding the structure of scattering amplitudes in this theory, in particular at two loops.

  36. LF21 - G. Isidori (nat. spokesperson) + G. Corcella, V. Del Duca, J. Jones (pdoc), G. Pancheri (senior ass.), O. Shekhovtsova (Ass.) Main research issues 1) Higgs mass implications on the stability of the electroweak vacuum 2) U(2) and Minimal Flavour Violation in Supersymmetry 3) A toy-model to explain the large t-tbar FB asymmetry observed at Tevatron 4) The one-loop six-dimensional hexagon integral with three massive corners 5) Investigation of the infrared structure of gauge theory amplitudes in the high-energy limit LNF activities in 2011 A new approach to the high-energy limit of gauge theories based on the universal properties of their infrared singularities. The main tool is the dipole formula, a compact Ansatz for the all-order infrared singularity structure of scattering amplitudes of massless partons. By taking the high-energy limit, we show that the dipole formula implies Reggeization of infrared-singular contributions to the amplitude, at leading logarithmic accuracy, for the exchange of arbitrary color representations in the cross channel. We observe that the real part of the amplitude Reggeizes also at next-to-leading logarithmic order, and we compute the singular part of the two-loop Regge trajectory, which is universally expressed in terms of the cusp anomalous dimension. The approach provides tools to study the high-energy limit beyond the boundaries of Regge factorization: thus we show that Reggeization generically breaks down at next-to-next-to-leading logarithmic accuracy, and provide a general expression for the leading Reggeization-breaking operator. The approach applies to multiparticle amplitudes in multi-Regge kinematics, and it also implies new constraints on possible corrections to the dipole formula, based on the Regge limit.

  37. LF21 - G. Isidori (nat. spokesperson) + G. Corcella, V. Del Duca, J. Jones (pdoc), G. Pancheri (senior ass.), O. Shekhovtsova (Ass.) Recent Publications Direct CP violation in charm and flavor mixing beyond the SM. G. F. Giudice, G. Isidori, P. Paradisi. JHEP 1204 (2012) 060. e-Print: arXiv:1201.6204 [hep-ph] Higgs mass implications on the stability of the electroweak vacuum. J. Elias-Miro (Barcelona, IFAE), J. R. Espinosa (Barcelona, IFAE & ICREA, Barcelona), G. F. Giudice (CERN), G. Isidori (CERN & Frascati), A. Riotto (CERN & INFN, Padua), A. Strumia (Pisa U. & INFN, Pisa & NICPB, Tallinn). Phys.Lett. B709 (2012) 222-228. e-Print: arXiv:1112.3022 [hep-ph] Implications of the LHCb Evidence for Charm CP Violation. G. Isidori, J. F. Kamenik, Z. Ligeti, G. Perez. Phys.Lett. B711 (2012) 46-51. e-Print: arXiv:1111.4987 [hep-ph] Supersymmetry in Light of 1/fb of LHC Data. O. Buchmueller (Imperial Coll., London), R. Cavanaugh (Fermilab & Illinois U., Chicago), A. De Roeck (CERN & Antwerp U.), M.J. Dolan (Durham U., IPPP), J.R. Ellis (King's Coll. London & CERN), H. Flacher (Bristol U.), S. Heinemeyer (Cantabria Inst. of Phys.), G. Isidori (Frascati), D.Martinez Santos (CERN), K.A. Olive (Minnesota U., Theor. Phys. Inst.) et al.. Eur.Phys.J. C72 (2012) 1878. e-Print: arXiv:1110.3568 [hep-ph]. An infrared approach to Reggeization. V. Del Duca (INFN, Rome), C. Duhr (Durham U.), E. Gardi (Edinburgh U.), L. Magnea (Turin U. & INFN, Turin), C. D. White (Glasgow U.). Phys.Rev. D85 (2012) 071104. Phenomenology of excited doubly charged heavy leptons at LHC. S. Biondini (Perugia U. & INFN, Perugia), O. Panella (INFN, Perugia), G. Pancheri (Frascati), Y.N. Srivastava, L. Fano (Perugia U. & INFN, Perugia) Phys.Rev. D85 (2012) 095018. e-Print: arXiv:1201.3764 [hep-ph]. Total and inelastic cross-sections at LHC at sqrts=7−TeV and beyond. A Achilli (INFN, Perugia & Perugia U.), R. M. Godbole (CERN), A. Grau (Granada U., Theor. Phys. Astrophys.), G. Pancheri (Frascati), O. Shekhovtsova (Valencia U., IFIC), Y. N. Srivastava (Perugia U. & INFN, Perugia). Phys.Rev. D84 (2011) 094009.

  38. LF21 - G. Isidori (nat. spokesperson) + G. Corcella, V. Del Duca, J. Jones (pdoc), G. Pancheri (senior ass.), O. Shekhovtsova (Ass.) Recent Publications Supersymmetry and Dark Matter in Light of LHC 2010 and Xenon100 Data. O. Buchmueller (Imperial Coll., London), R. Cavanaugh (Fermilab & Illinois U., Chicago), D. Colling (Imperial Coll., London), A. De Roeck (CERN & Antwerp U.), M.J. Dolan (Durham U., IPPP), J.R. Ellis (CERN & King's Coll. London), H. Flacher (Rochester U.), S. Heinemeyer (Cantabria Inst. of Phys.), G. Isidori (Frascati), D.Martinez Santos (CERN) et al.. Eur.Phys.J. C71 (2011) 1722. e-Print: arXiv:1106.2529 [hep-ph] U(2) and Minimal Flavour Violation in Supersymmetry. R. Barbieri (Pisa, Scuola Normale Superiore & INFN, Pisa), G. Isidori, J. Jones-Perez (Frascati), P. Lodone, D. M. Straub (Pisa, Scuola Normale Superiore & INFN, Pisa). Eur.Phys.J. C71 (2011) 1725. e-Print: arXiv:1105.2296 [hep-ph]. Forward-Backward t tbar Asymmetry from Anomalous Stop Pair Production. G. Isidori (Frascati), J. F. Kamenik (Stefan Inst., Ljubljana & Ljubljana U.). Phys.Lett. B700 (2011) 145-149. e-Print: arXiv:1103.0016 [hep-ph]. Implications of Initial LHC Searches for Supersymmetry. O. Buchmueller (Imperial Coll., London), R. Cavanaugh (Fermilab & Illinois U., Chicago), D. Colling (Imperial Coll., London), A. de Roeck (CERN & Antwerp U.), M.J. Dolan (Durham U., IPPP), J.R. Ellis (CERN & King's Coll. London), H. Flacher (Rochester U.), S. Heinemeyer (Cantabria Inst. of Phys.), G. Isidori (Frascati), K. Olive (Minnesota U., Theor. Phys. Inst.) et al.. Eur.Phys.J. C71 (2011) 1634. e-Print: arXiv:1102.4585 [hep-ph]. Quarkonium production in high energy proton-proton and proton-nucleus collisions. Z. Conesa del Valle (Strasbourg, IPHC & CERN), G. Corcella (Frascati), F. Fleuret (Ecole Polytechnique), E.G. Ferreiro (Santiago de Compostela U., IGFAE), V. Kartvelishvili (Lancaster U.), B. Kopeliovich (Santa Maria U., Valparaiso & CCTVal, Valparaiso), J.P. Lansberg (Orsay, IPN), C. Lourenco (CERN), G. Martinez (SUBATECH, Nantes), V. Papadimitriou (Fermilab) et al.. Nucl.Phys.Proc.Suppl. 214 (2011) 3-36. e-Print: arXiv:1105.4545 [hep-ph]. Hadronic backgrounds from two photon processes. R.M. Godbole, A. Grau, K.A. Mohan, G. Pancheri, Y.N. Srivastava. Nuovo Cim. 034C (2011) 129-138

  39. LF21 - G. Isidori (nat. spokesperson) + G. Corcella, V. Del Duca, J. Jones (pdoc), G. Pancheri (senior ass.), O. Shekhovtsova (Ass.) Recent Publications The Infrared structure of gauge theory amplitudes in the high-energy limit. V. Del Duca (Frascati), C. Duhr (Durham U., IPPP), E. Gardi (Edinburgh U.), L. Magnea (Turin U. & INFN, Turin), C. D. White (Glasgow U.). JHEP 1112 (2011) 021. e-Print: arXiv:1109.3581 [hep-ph]. The one-loop six-dimensional hexagon integral with three massive corners. V. Del Duca (INFN & KIPAC, Menlo Park), L. J. Dixon (SLAC & CERN), J. M. Drummond (CERN & LAPTH, Annecy-le-Vieux), C. Duhr (Durham U., IPPP & KIPAC, Menlo Park), J. M. Henn (Humboldt U., Berlin & KIPAC, Menlo Park), V. A. Smirnov (Moscow State U.). Phys.Rev. D84 (2011) 045017. e-Print: arXiv:1105.2011 [hep-th]. The One-Loop One-Mass Hexagon Integral in D=6 Dimensions. V. Del Duca (Frascati & Santa Barbara, KITP), C. Duhr (Santa Barbara, KITP & Durham U., IPPP), V. A. Smirnov (SINP, Moscow). JHEP 1107 (2011) 064. e-Print: arXiv:1105.1333 [hep-th]. The massless hexagon integral in D = 6 dimensions. V. Del Duca (Frascati & Santa Barbara, KITP), C. Duhr (Santa Barbara, KITP & Durham U., IPPP), V. A. Smirnov (SINP, Moscow). Phys.Lett. B703 (2011) 363-365. e-Print: arXiv:1104.2781 [hep-th]. A model for probing large distance behaviour in high energy collisions. G. Pancheri (Frascati), R.M. Godbole (Bangalore, Indian Inst. Sci.), A. Grau (Granada U., Theor. Phys. Astrophys.), Y.N. Srivastava (Perugia U. & INFN, Perugia). Nucl.Phys.Proc.Suppl. 219-220 (2011) 239-246. B-decay CP-asymmetries in SUSY with a U(2)^3 flavour symmetry. R. Barbieri, P. Campli (INFN, Pisa & Pisa, Scuola Normale Superiore), G. Isidori (Frascati), Filippo Sala, David M. Straub (INFN, Pisa & Pisa, Scuola Normale Superiore). Eur.Phys.J. C71 (2011) 1812. e-Print: arXiv:1108.5125 [hep-ph]. Modeling pion and nucleon total cross-sections. Y. Srivastava (Perugia U. & INFN, Perugia), A. Grau (Granada U., Theor. Phys. Astrophys.), G. Pancheri, O. Shekhovtsova (Frascati). AIP Conf.Proc. 1350 (2011) 211-215

  40. LF21 - G. Isidori (nat. spokesperson) + G. Corcella, V. Del Duca, J. Jones (pdoc), G. Pancheri (senior ass.), O. Shekhovtsova (Ass.) External fundings LHCPhenoNet, an Initial Training Network (ITN) supported by the 7th Framework Programme of the European Commission. Network Contract PITN-GA-2010-264564 2011-2014. 12 teams from 28 European Universities and Research Institutes, including INFN-LNF, the University of Buenos Aires, CERN, and 3 partners from the industrial sector. http://www.lhcphenonet.eu/

  41. MI11 - M.P. Lombardo (loc. spokesperson) + K. Miura (pdoc) Main research issues • Since the very start in 2001 the MI11 research program has been focused on Lattice Field Theories • and Computational Particle Physics. In order to make an impact in all the fields the research program • is concerned in (lattice field theories, classical field theories out of equilibrium, statistical mechanics • and turbulent dynamics) one needs to develop both the best theoretical understanding and the best • computational tools. LNF activities in 2011 Work continues on the study of the phases of Strong Interactions. The general goal is the analysis of the phase diagram of strong interactions, with applications to the physics of ultrarelativistic heavy ions collisions and the study of alternative mechanisms of strong electroweak breaking. Specific projects include - The analysis of the sign problem of QCD, by using model field theories and Random Matrix Theory. The phase transition of QCD with two light flavors and twisted mass Wilson fermions close to the continuum limit, i.e. with lattices with time elongations Nt=10 and Nt=12 The study of the conformal window of QCD, in particular the infrared fixed point and the spectrum of the near conformal phase A novel approach to the freezout line of QCD, which takes into account the occurrence of the spinodial line.

  42. MI11 - M.P. Lombardo (loc. spokesperson) + K. Miura (pdoc) Recent Publications Chiral phase transition at finite temperature and conformal dynamics in large Nf QCD. K. Miura (Frascati), M. P. Lombardo (Frascati & Humboldt U., Berlin), E. Pallante (Groningen U.). Phys.Lett. B710 (2012) 676-682, e-Print: arXiv:1110.3152 [hep-lat] What happens to the Upsilon and eta_b in the quark-gluon plasma? Bottomonium spectral functions From lattice QCD. G. Aarts, C. Allton (Swansea U.), S. Kim (Sejong U. & Swansea U.), M.P. Lombardo (Frascati & Humboldt U., Berlin), M.B. Oktay (Utah U.), S.M. Ryan (Trinity Coll., Dublin), D.K. Sinclair (Argonne), J.I. Skullerud (NUIM, Maynooth). JHEP 1111 (2011) 103, e-Print: arXiv:1109.4496 [hep-lat] Strongly interacting quark-gluon plasma and the critical behaviour of QCD at imaginary mu. M. D'Elia (Genoa U. & INFN, Genoa), F. Di Renzo (Parma U. & INFN, Parma), M. P. Lombardo (Frascati) Indian J.Phys. 85 (2011) 51-55 Bottomonium above deconfinement in lattice nonrelativistic QCD. G. Aarts (Swansea U.), S. Kim (Sejong U.), M.P. Lombardo (Frascati), M.B. Oktay (Utah U.), S.M. Ryan (Trinity Coll., Dublin), D.K. Sinclair (Argonne, HEP), J.-I. Skullerud (NUIM, Maynooth). Phys.Rev.Lett. 106 (2011) 061602. e-Print: arXiv:1010.3725 [hep-lat] Chiral and deconfinement transitions in strong coupling lattice QCD with finite coupling and Polyakov loop effects. T. Z. Nakano (Kyoto U. & Kyoto U., Yukawa Inst., Kyoto), K. Miura (Frascati), A. Ohnishi (Kyoto U., Yukawa Inst., Kyoto). Phys.Rev. D83 (2011) 016014. e-Print: arXiv:1009.1518 [hep-lat] External fundings Research also supported by CINECA (200 Khours on IBM Power6 and IBM BG/P), by MIUR (PRIN 2009) and by EU (I3HP3/WP22)

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