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arXiv 1306.6555hep-th
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二维Proca理论中幂零对称性的增广超场方法

Augmented Superfield Approach to Nilpotent Symmetries in the Modified Version of 2D Proca Theory

A. Shukla, S. Krishna, R. P. Malik

摘要:

我们推导出完整的离壳幂零和绝对反对易的Becchi-Rouet-Stora-Tyrons(BRST),反BRST和(反)co-BRST对称变换的所有领域的修改版本的两个(1+1)维(2D)Proca理论,利用“增广”超场形式主义的(双)水平性条件和(双)规范不变的限制一起利用。我们捕获的(反)BRST和(反)合作BRST不变性的拉格朗日密度的超场形式主义的语言。我们还表示的幂零性和绝对反交换性的(反)BRST和(反)co-BRST收费的增广超场形式主义的框架内。这项工作导致了一些新的意见,迄今为止,没有被指出在文献中的超场方法的框架内BRST形式主义。为了完整起见,我们还提到,非常简短,一个独特的玻色子对称性,鬼标对称性和离散对称性的理论,并表明,代数保守电荷捕获微分几何的上同调方面。因此,我们目前修改的二维Proca理论是霍奇理论的模型。

英文摘要:

We derive the complete set of off-shell nilpotent and absolutely anticommuting Becchi-Rouet-Stora-Tyutin (BRST), anti-BRST and (anti-)co-BRST symmetry transformations for all the fields of the modified version of two (1+1)-dimensional (2D) Proca theory by exploiting the "augmented" superfield formalism where the (dual-)horizontality conditions and (dual-)gauge-invariant restrictions are exploited together. We capture the (anti-)BRST and (anti-)co-BRST invariance of the Lagrangian density in the language of superfield formalism. We also express the nilpotency and absolute anticommutativity of the (anti-)BRST and (anti-)co-BRST charges within the framework of augmented superfield formalism. This exercise leads to some novel observations which have, hitherto, not been pointed out in the literature within the framework of superfield approach to BRST formalism. For the sake of completeness, we also mention, very briefly, a unique bosonic symmetry, the ghost-scale symmetry and discrete symmetries of the theory and show that the algebra of conserved charges captures the cohomological aspects of differential geometry. Thus, our present modified 2D Proca theory is a model for the Hodge Theory.

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