# 理論セミナー／Dr. Yuki Yokokura

カテゴリ 2016/06/24（金）17:00 2016/06/24（金）18:30 Kenkyu Honkan 3F seminar room(322,321) Thermodynamic entropy as a Noether invariant Dr. Yuki Yokokura(RIKEN) 日本語/Japanese 松久/ matsuhis-AT-post.kek.jp https://www2.kek.jp/theory-center/theory/archives/seminar/20160624/ 利用予定なし／0

## 概要

We study a classical many-particle system with an external
control represented by a time-dependent extensive parameter in a
Lagrangian. We show that thermodynamic entropy of the system is
uniquely characterized as the Noether invariant associated with a
symmetry for an infinitesimal non-uniform time translation $t\to +\eta\hbar \beta$, where $\eta$ is a small parameter, $\hbar$ is the
Planck constant, $\beta$ is the inverse temperature that depends on
the energy and control parameter, and trajectories in the phase space
are
restricted to those consistent with quasi-static processes in
thermodynamics.

REFERENCE:
Phys. Rev. Lett. 116, 140601 (2016)

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