Theory of Charge and Heat Polarizations with the Keldysh Formalism
Theory of Charge and Heat Polarizations with the Keldysh Formalism
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DOI：
10.7566/jpsj.83.033708
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发表时间：
2013-12
影响因子：
1.7
通讯作者：
A. Shitade
中科院分区：
文献类型：
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作者：
A. Shitade
我们用规范协变的Keldysh形式研究了热极化，这是一种与电荷极化的热模拟。与天真地设想的电荷-热量类比相反，我们发现热极化并不是自发出现的，因为它不仅包括热传递贡献，而且包括热产生贡献，从而导致了Mott规则。尽管如此，(3+1)维拓扑绝缘体和超导体中的扭转磁场仍然可以感应，这可以用聂燕作用的时间部分来描述。
We investigate the heat polarization, a heat analog of the charge polarization, by using the gauge-covariant Keldysh formalism. In contrast to the charge-heat analogy naively expected, we find that the heat polarization does not appear spontaneously, since it consists not only of the heat-transfer contribution but of the heat-generation contribution, leading to the Mott rule. Nonetheless, it can be induced by a torsional magnetic field in (3 + 1)-D topological insulators and superconductors, which is described by the temporal part of the Nieh–Yan action.