arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1601.00766cond-mat.quant-gas
收藏

非均匀非平衡量子流体的正常和超流分数

Normal and superfluid fractions of inhomogeneous nonequilibrium quantum fluids

Vladimir N. Gladilin, Michiel Wouters

摘要:

我们提出了一个理论分析的正常和超流分数的量子流体所描述的非平衡扩展的Gross-Pitaevskii方程中存在的外部潜在的。无序和定期潜力被认为是。正常和超流分数是由非平衡量子流体对矢量势的响应定义的,与平衡情况类似。我们发现,这些定义的物理意义打破了平衡。正常和超流的分数加起来不再是1,对于某些类型的外部势,它们甚至可以变成负数。

英文摘要:

We present a theoretical analysis of the normal and superfluid fractions of quantum fluids described by a nonequilibrium extension of the Gross-Pitaevskii equation in the presence of an external potential. Both disordered and regular potentials are considered. The normal and superfluid fractions are defined by the response of the nonequilibrium quantum fluid to a vector potential, in analogy with the equilibrium case. We find that the physical meaning of these definitions breaks down out of equilibrium. The normal and superfluid fractions no longer add up to one and for some types of external potentials, they can even become negative.

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。

↑