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arXiv 1001.0219hep-thmath.DG
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BV代数的规范化

The gauging of BV algebras

Roberto Zucchini

摘要:

BV代数是BV量化算法在其中实现的形式框架。除了编码在BV主方程中的规范对称性之外,主作用量通常表现出进一步的全局对称性,这可以反过来被规范。我们将展示如何进行这一点,在BV代数设置。根据整体对称性的性质,测量涉及耦合到一个纯鬼系统与变化量的鬼超对称性。耦合到一个N=0的鬼系统产生一个普通的规范理论,其观测量是适当的分类不变BV上同调。耦合到一个N=1鬼系统导致拓扑规范场理论,其可观测量分类的等变BV上同调。耦合到更高的$N$鬼系统产生拓扑规范场理论具有更高的拓扑对称性。然而,在后一种情况下,出现了一个全新的问题,这就要求对标准BV代数框架进行修订。

英文摘要:

A BV algebra is a formal framework within which the BV quantization algorithm is implemented. In addition to the gauge symmetry, encoded in the BV master equation, the master action often exhibits further global symmetries, which may be in turn gauged. We show how to carry this out in a BV algebraic set up. Depending on the nature of the global symmetry, the gauging involves coupling to a pure ghost system with a varying amount of ghostly supersymmetry. Coupling to an N=0 ghost system yields an ordinary gauge theory whose observables are appropriately classified by the invariant BV cohomology. Coupling to an N=1 ghost system leads to a topological gauge field theory whose observables are classified by the equivariant BV cohomology. Coupling to higher $N$ ghost systems yields topological gauge field theories with higher topological symmetry. In the latter case, however, problems of a completely new kind emerge, which call for a revision of the standard BV algebraic framework.

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