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arXiv 1111.7083hep-th
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相对论复数标量场和Dirac场的非平衡热场动力学

Non-Equilibrium Thermo Field Dynamics for Relativistic Complex Scalar and Dirac Fields

Yuichi Mizutani, Tomohiro Inagaki

摘要:

研究了非平衡热场动力学中复标量场和狄拉克场的相对论性量子场论。热真空由Bogoliubov变换的产生和湮灭算符定义。引入两个独立的荷电场Bogoliubov参数。它的差自然地引起化学势。含时热Bogoliubov变换生成热计数器项。我们通过自洽重整化条件来固定这些项。在自洽重整化条件下求出热自能,导出了相对论性场的量子玻尔兹曼方程。

英文摘要:

Relativistic quantum field theories for complex scalar and Dirac fields are investigated in non-equilibrium thermo field dynamics. The thermal vacuum is defined by the Bogoliubov transformed creation and annihilation operators. Two independent Bogoliubov parameters are introduced for a charged field. Its difference naturally induces the chemical potential. Time-dependent thermal Bogoliubov transformation generates the thermal counter terms. We fix the terms by the self-consistency renormalization condition. Evaluating the thermal self-energy under the self-consistency renormalization condition, we derive the quantum Boltzmann equations for the relativistic fields.

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