Isospin dependent interactions in RMF & ρ NN tensor coupling

1. Isospin dependent interactions in RMF & ρNN tensor coupling • Introduction • ρNN tensor coupling in RMF • Some results • Summary Wei-Zhou JIANG Collaborators: Y.L.ZHAO, et.al. Shanghai Institute of Applied Physics

2. Brockmann,Machleidt，PRC42,1965(1990)

6. Li Bao-An, PRL88,192701(2002)

7. RMF

12. Y.B.Wei, Y.G.Ma, et.al., Exploring the binding energy and separation energy dependences of HBT strength, Phys. Lett. B 586(2004)225 • Reveal the relationship between the single neutron separation energy and the trength of the halo neutron–proton HBT. Results show that neutron–proton HBT results are sensitive to binding energy or separation energy.

19. Nuclear Structure Density dependence of the symmetry energy (DDSE) • Abundance of information:Binding Energy, Density distribution, Deformations, Excitations, etc • More definite: structure information • Deficiency：Nuclei far off  stability；Insensitivity of DDSE at low density

20. RMF NN tensor coupling A large  NN tensor Coupling: The dispersion-theoretical analysis of the nucleon electromagnetic form factors G.Höler, E.Pietarinen, NPB95(1975) 210; P.Mergell, et.al. NPA596(1996)367 The analysis of the NN scattering G.E.Brown, R.Machleidt, PRC 50(1994)1731 The light cone sum rules S.L.Zhu, PRC59(1999)435 with

21. 1.Inclusion of isoscalar-isovector coupling: Modify neutron thickness of 208Pb other than its proton distribution 改变Pb的中子而非电荷分布 2.Particularity of light exotic nuclei: Coupling between the neighboring shells of neutron and proton influences the charge distribution; Experimentally yet to be measured 邻近中子质子壳耦合, 对电荷分布影响如何? 实验上待测 3.NN tensor couling: 不改变核物质性质(RMF)而影响有限核性质 (1) Influence the properties of finite nuclei without changing those of nuclear matter in RMF (2) The isoscalar-isovector coupling modifies the source term of rho meson (also the tensor coupling) (3)Tensor coupling is relevant to the gradient of the related density

22. RMF Eqs:

23. Establish data to data correlation of neutron thickness of 208Pb and nucleon radii of light exotic nuclei At Jefferson Lab Charge distribution measurement at GSI and RIKEN in future

26. 0.35, 0.5, 083 for 2s1/2 of 22,23,24O

31. Model dependence ( NL3, S271) • Same saturation density kF=1.30fm-1 • Same binding energy per nucleon (16.24MeV) • Same and incompressibility (271MeV) • But different effective mass: For NL3: 0.59M; for S271 : 0.7M Another Role of rho NN tensor coupling:

34. 26Ne

35. Influence on halos

36. Summary • 23,24O, 25,26F, 26Ne 208Pb with isoscalar-isovector couplings • Charge radii of exotic nucleisensitive tothe density dependence of symmetry energy • NN tensor coupling enhances the sensitivity, subject to the 2S1/2 occupancy • NN tensor coupling reduces the model dependence PLB617(2005)33; PRC(2005) to be published

37. Acknowledgment • 兰州重离子加速器国家实验室理论物理中心 • CAS Knowledge Innovation Project No.KJCX2-N11 • National Natural Sciences Foundation of China under grant No.10405031, 10235030 • Major State Basic Research Development Program under grant No. G200077400

38. 谢谢! Thanks!

39. FUTURE EFFORTS • Nuclear structure of exotic nuclei • Superheavy nuclei • Hypernuclei • Neutron stars • In thermodynamics