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arXiv 2303.16337cond-mat.stat-mech
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准静态功的涨落定理

Fluctuation theorems for quasistatic work

Pierre Nazé

AI总结:

本文基于 Jarzynski 等式推导准静态功的四种涨落定理,并考察其与强不等式 ⟨W⟩≥⟨W_qs⟩ 的关系,发现这些定理既不能推出该不等式,其失效也不导致矛盾。

摘要:

当一个热孤立系统在准静态区间内执行驱动过程时,其平均能量的变化等于其准静态功。尽管这一量具有如此简单的定义,但从涨落定理的角度描述它的尝试却很少。在本工作中,基于 Jarzynski 等式,推导出该等式的四种形式。为了证实该结果,研究寻求其与强不等式 ⟨W⟩≥⟨W_qs⟩ 的关系。最终结论是:所推导出的任何涨落定理都不能导出这一假设。此外,如果强不等式不成立,也未观察到矛盾。

英文摘要:

When a thermally isolated system performs a driving process in the quasistatic regime, its variation of average energy is equal to its quasistatic work. Even though presenting this simple definition, few attempts have been made to describe such quantity from the fluctuation theorem point of view. In this work, based on Jarzynski's equality, four forms of such equality are deduced. To corroborate the result, a relation with the strong inequality $\langle W\rangle\ge \langle W_{\rm qs}\rangle$ is pursued. It is concluded in the end that any of the fluctuation theorems deduced cannot derive such a postulate. Also, no contradiction is observed if the strong inequality breaks down.

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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