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arXiv 2007.14090cond-mat.quant-gascond-mat.stat-mech
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非平衡玻色系统的特征量

Characteristic quantities for nonequilibrium Bose systems

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

摘要:

本文讨论了哪些特征量可以量化玻色系统的非平衡态。在这些量中,考虑了以下量:有效温度、菲涅耳数和马赫数。通过研究振荡阱中的玻色-爱因斯坦凝聚体,可以区分出八种不同的非平衡态:弱非平衡态、涡芽、涡环、涡线、变形涡、涡湍流、颗粒湍流和波湍流。非平衡态的实验和建模通过求解非线性薛定谔方程。

英文摘要:

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 Schrödinger equation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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