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arXiv · 2007.14090

Characteristic quantities for nonequilibrium Bose systems

V. I. Yukalov·A. N. Novikov·E. P. Yukalova·V. S. Bagnato
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Abstract

The paper discusses what characteristic quantities could quantify nonequilibrium states of Bose systems. Among such quantities, the following are considered: effective temperature, Fresnel number, and Mach number. The suggested classification of nonequilibrium states is illustrated by studying a Bose-Einstein condensate in a shaken trap, where it is possible to distinguish eight different nonequilibrium states: weak nonequilibrium, vortex germs, vortex rings, vortex lines, deformed vortices, vortex turbulence, grain turbulence, and wave turbulence. Nonequilibrium states are created experimentally and modeled by solving the nonlinear Schr\"odinger equation.

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BibTeXRIS

V. I. Yukalov, A. N. Novikov, E. P. Yukalova, V. S. Bagnato. 2020-07-28. Characteristic quantities for nonequilibrium Bose systems. https://doi.org/10.1088/1742-6596/1508/1/012006

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