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arXiv 0812.0580hep-th
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场论和算符形式统计物理中的规范不变性

Gauge Invariance in Field Theory and Statistical Physics in Operator Formalism

I. V. Tyutin

摘要:

本文仅利用Heisenberg算符的正则对易关系和运动方程,得到了非阿贝尔规范理论中格林函数的沃德恒等式和规范依赖性.这种考虑适用于有和没有自发对称性破缺的理论。我们提出了一个广义统计平均的定义,它确保了费米子场的温度格林函数的傅立叶图像只有偶值频率。这使得有可能建立一个规范不变的统计平均的哈密顿量和场算子的程序。

英文摘要:

We obtain the Ward identities and the gauge-dependence of Green's functions in non-Abelian gauge theories by using only the canonical commutation relations and the equations of motion for the Heisenberg operators. The consideration is applicable to theories both with and without spontaneous symmetry breaking. We present a definition of a generalized statistical average which ensures that the Fourier images of temperature Green's functions of the Fermionic fields have only even-valued frequencies. This makes it possible to set up a procedure of gauge-invariant statistical averaging in terms of the Hamiltonian and the field operators.

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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