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Jarzynski Equality for Driven Quantum Field Theories

机译:jarzynski驱动量子域理论的平等

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The fluctuation theorems, and in particular, the Jarzynski equality, are the most important pillars of modern nonequilibrium 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 ? 4 . 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 ultrarelativistic regime. In this case, it is found that work done through processes with pair creation is the dominant contribution.
机译:波动定理,特别是Jarzynski平等是现代非核统计力学的最重要的支柱。我们将量子Jarzynski平等与两次测量形式主义一起扩展到它们的最终有效性范围 - 量子域理论。为此,我们专注于时间依赖的标量版? 4.我们找到了所产生的工作分配功能的封闭形式表达式,并发现它们是量子场理论的适当物理观察。此外,我们明确地显示了Jarzynski平等和骗子波动定理在一个独立于重整规模的单循环顺序保持。作为一个数字案例研究,我们将工作分布计算在超引发系统中的无限平稳协议。在这种情况下,发现通过与对创建的过程完成的工作是主导贡献。

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