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Few-body physics of ultracold atoms and molecules in confined geometry PowerPoint Presentation
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Few-body physics of ultracold atoms and molecules in confined geometry
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  1. Few-body physics of ultracold atoms and molecules in confined geometry Vladimir Melezhik Bogoliubov Lab. of Theoretical Physics, JINR, Dubna Outline: Experimental achievements (laser cooling, optical traps, atomic chips) New physics: quantum gases, physics of Bose-Einstein condensations Problems: low-dimensional few-body physics Theoretical models (simple ones) Resent results (extended models) Perspectives, what is going to happen ? 3-5 Feb 2010, Dubna

  2. Creation of ultracold atoms and molecules (quantum gases) Progress in production of ultracold atoms and molecules: laser cooling V.S.Letokhov,V.G.Minogin andB.D.Pavlik, ZhTPH, 72, 1328 (1977) The Nobel Prize in Physics 1997

  3. Dilute gas two distance scales: and Boltsmann gas Quantum statistics bosons BEC = macroscopic occupation of a single quantum state

  4. BEC objects Neutron stars R Superfluid Exitones in semiconductors Dilute atomic gases Collective behavior of extremely dilute systems Generation of coherent matter waves

  5. Status at about 2005-2008 2009

  6. ultracold atoms in optical traps, atomic chips, quantum wires

  7. Botsmann gas quantum gass Two-Body Problem in Restricted Geometry: a) Quantization in the direction of the confinement +

  8. Two-body problem in confined geometry non-separable two-body problem simple model: pseudopotential approach (zero-range potential) Isotropic confinement:

  9. Physical interpretation of CIR • CIR is a zero-energy Feshbach resonance, occurring when the energy of a bound state of the asymptotically closed channels coincides with the continuum threshold of the open channel.

  10. Experimental observation of CIR strongly-correlated Tonk-Girardeau gas (Innsbruck ) B

  11. What happens if atoms scatter in excited states? E What happens in collision of two distinguishable particles in a harmonic waveguide if ? What happens if inelastic collisions? Molecule formation?