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arXiv 1710.00829cond-mat.stat-mechhep-thquant-ph
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受迫量子场论的Jarzynski等式

Jarzynski Equality for Driven Quantum Field Theories

Anthony Bartolotta, Sebastian Deffner

摘要:

涨落定理,特别是Jarzynski等式,是现代非平衡统计力学最重要的支柱。我们将量子Jarzynski等式和两次测量形式主义一起推广到它们的最终有效范围--推广到量子场论。为此,我们专注于标量φ 4的时间依赖版本。我们发现封闭形式的表达式所产生的工作分布函数,我们发现,它们是适当的物理观测的量子场论。此外,我们明确地表明,Jarzynski平等和克鲁克斯波动定理举行一个循环的顺序独立的重整化规模。作为一个数值例子,我们计算了一个无限光滑的协议在超相对论制度的工作分布。在这种情况下,它被发现,通过与对创建过程所做的工作是占主导地位的贡献。

英文摘要:

The fluctuation theorems, and in particular, the Jarzynski equality, are the most important pillars of modern non-equilibrium statistical mechanics. We extend the quantum Jarzynski equality together with the Two-Time Measurement Formalism to their ultimate range of validity -- to quantum field theories. To this end, we focus on a time-dependent version of scalar phi-four. We find closed form expressions for the resulting work distribution function, and we find that they are proper physical observables of the quantum field theory. Also, we show explicitly that the Jarzynski equality and Crooks fluctuation theorems hold at one-loop order independent of the renormalization scale. As a numerical case study, we compute the work distributions for an infinitely smooth protocol in the ultra-relativistic regime. In this case, it is found that work done through processes with pair creation is the dominant contribution.

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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