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Gibbs Variational Formula for Thermal Equilibrium States in Terms of Quantum Relative Entropy Density
Journal of Statistical Physics ( IF 1.3 ) Pub Date : 2020-07-03 , DOI: 10.1007/s10955-020-02600-5
Hajime Moriya

We prove the Gibbs variational formula in terms of quantum relative entropy density that characterizes translation invariant thermal equilibrium states in quantum lattice systems. It is a natural quantum extension of the similar statement established by F\"ollmer for classical systems. In this work we advocate the viewpoint: Avoid the unique-phase assumption if it is not essential.

中文翻译:

用量子相对熵密度表示的热平衡状态的吉布斯变分公式

我们根据量子相对熵密度证明了吉布斯变分公式,该公式表征了量子晶格系统中的平移不变热平衡状态。它是 F\"ollmer 为经典系统建立的类似陈述的自然量子扩展。在这项工作中,我们提倡的观点是:如果不是必需的,则避免唯一相位假设。
更新日期:2020-07-03
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