2011/06/02 by Vivek M. Vyas, Vyas, Vivek M., Sandeep Gautam +3
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum and Classical Electrodynamics #Quantum, superfluid, helium dynamics #cond-mat.quant-gas
paper · pdf · doi:10.48550/arxiv.1106.0402
Minor changes, few references added. REVTEX 4, 10 pages, 1 figure
arxiv created 2011/07/27 · arxiv updated 2011/07/28
We show that quasi-one dimensional Bose-Einstein condensate under suitable conditions can exhibit a Berezinskii-Kosterlitz-Thouless phase transition. The role played by quantized vortices in two dimensional case, is played in this case by dark solitons. We find that the critical temperature for this transition lies in nano Kelvin range and below, for a wide range of experimentally accessible parameters. It is seen that the high temperature (disordered) phase differs from low temperature (ordered) phase in terms of phase coherence, which can be used as an experimental signature for observing this transition.