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arXiv 2201.07505hep-th
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关于可约规范理论的规范不变形变

On gauge-invariant deformation of reducible gauge theories

P. M. Lavrov

摘要:

本文将文[1]、[2]中提出的从闭/开规范代数的初始规范理论构造规范不变形变理论的新方法推广到可约规范代数的情形。变形过程中明确描述的反正则变换的生成函数的帮助下,依赖于字段的初始规范作用。借助于生成函数,以一种封闭的、简单的形式描述了变形规范不变作用量和变形规范生成元。作为可约规范系统的一个例子,我们考虑自由费米子p型场,或者换句话说,考虑反对称张量-旋量场。证明了费米子p型场的规范不变形变总是导致不包含封闭局域扇区的非局域形变理论。反过来,基于两个费米子2-形式场和一个实质量标量场的模型承认在变形作用量的局部扇区中这些场之间的局部相互作用。

英文摘要:

New method for construction of gauge-invariant deformed theory from an initial gauge theory proposed in our previous papers [1], [2] for closed/open gauge algebras is extended to the case of reducible gauge algebras. The deformation procedure is explicitly described with the help of generating functions of anticanonical transformations depending on fields of the initial gauge action only. The deformed gauge-invariant action and the deformed gauge generators are described with the help of the generating functions in a closed and simple form. As an example of reducible gauge systems we consider the free fermionic p-form fields or, in another words, the antisymmetric tensor-spinor fields. It is proved that gauge-invariant deformation of fermionic p-form fields leads always to non-local deformed theory which does not contain a closed local sector. In its turn the model based on two fermionic 2-form fields and a real massive scalar field admits local interactions between these fields in local sector of the deformed action.

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