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arXiv 0704.0064hep-th
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超场表述中的幂零对称不变性:(非)阿贝尔1-形式规范理论

Nilpotent symmetry invariance in the superfield formulation: the (non-)Abelian 1-form gauge theories

R. P. Malik

摘要:

在超场形式框架下,我们得到了四维(3 + 1)维(非)阿贝尔1-形式规范理论的拉格朗日密度的离壳和在壳的幂零Becchi-Rouet-Stora-Tyrons(BRST)和反BRST对称不变性.特别是,我们提供了几何解释(i)上述幂零对称不变性,和(ii)上述拉格朗日密度,在语言的特定量定义在域的上述超场形式主义。与4D(非)阿贝尔1-形式规范理论有关的一些微妙的问题,在上述超场形式的框架内得到了澄清,其中4D普通规范理论被认为是在由四个时空坐标x^μ(μ= 0,1,2,3)和一对格拉斯曼变量θ和\bar θ参数化的(4,2)维超流形上。我们目前的调查的关键成果之一是大量的简化几何理解的幂零(反)BRST对称不变性。

英文摘要:

We capture the off-shell as well as the on-shell nilpotent Becchi-Rouet-Stora-Tyutin (BRST) and anti-BRST symmetry invariance of the Lagrangian densities of the four (3 + 1)-dimensional (4D) (non-)Abelian 1-form gauge theories within the framework of the superfield formalism. In particular, we provide the geometrical interpretations for (i) the above nilpotent symmetry invariance, and (ii) the above Lagrangian densities, in the language of the specific quantities defined in the domain of the above superfield formalism. Some of the subtle points, connected with the 4D (non-)Abelian 1-form gauge theories, are clarified within the framework of the above superfield formalism where the 4D ordinary gauge theories are considered on the (4, 2)-dimensional supermanifold parametrized by the four spacetime coordinates x^μ(with μ= 0, 1, 2, 3) and a pair of Grassmannian variables θand \barθ. One of the key results of our present investigation is a great deal of simplification in the geometrical understanding of the nilpotent (anti-)BRST symmetry invariance.

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