1997/05/06 by Kedar Damle, Satya N. Majumdar, Damle, Kedar +3
Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/9705047
To be published in "Pune Workshop (CMT-20) Proceedings"; Vol-12, Condensed Matter Theories; Nova Science Publishing. Ed: J. W. Clark
arxiv created 1997/05/06 · arxiv updated 2016/08/31
We study the approach to equilibrium of a Bose gas to a superfluid state. We point out that dynamic scaling, characteristic of far from equilibrium phase-ordering systems, should hold. We stress the importance of a non-dissipative Josephson precession term in driving the system to a new universality class. A model of coarsening in d=2, involving a quench between two temperatures below the equilibrium superfluid transition temperature (Tc), is exactly solved and demonstrates the relevance of the Josephson term. Numerical results on quenches from above Tc in d=2,3 provide evidence for the scaling picture postulated.