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arXiv 1401.0164cond-mat.stat-mechcond-mat.quant-gascond-mat.str-el
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孤立系的周期热力学

Periodic thermodynamics of isolated systems

Achilleas Lazarides, Arnab Das, Roderich Moessner

摘要:

自量子力学诞生以来,在时间中被周期性驱动的孤立多体量子系统的行为性质一直是一个悬而未决的问题。在初始瞬态之后,已知这样的系统与驱动同步;与非驱动情况相反,没有基本原理被提出来构造所得到的非平衡态。在这里,我们分析表明,对于一类可积系统,相关的合奏是通过最大化适当定义的熵的约束,我们明确确定。这一结果构成了平衡统计力学的概念,一类远离平衡系统,到目前为止,主要是使用特设的方法访问的概括。

英文摘要:

The nature of the behaviour of an isolated many-body quantum system periodically driven in time has been an open question since the beginning of quantum mechanics. After an initial transient, such a system is known to synchronize with the driving; in contrast to the non-driven case, no fundamental principle has been proposed for constructing the resulting non-equilibrium state. Here, we analytically show that, for a class of integrable systems, the relevant ensemble is constructed by maximizing an appropriately defined entropy subject to constraints, which we explicitly identify. This result constitutes a generalisation of the concepts of equilibrium statistical mechanics to a class of far-from-equilibrium-systems, up to now mainly accessible using ad-hoc methods.

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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