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arXiv 1901.03540hep-th
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重整化与Donaldson-Witten理论中的BRST对称性

Renormalization and BRST symmetry in Donaldson-Witten theory

Georgios Korpas, Jan Manschot, Gregory W. Moore, Iurii Nidaiev

摘要:

拓扑扭曲规范理论中BRST对称性的存在使得精确分析这些理论成为可能。虽然整体BRST对称性表明BRST精确观测量的关联函数为零,但由于场空间边界的贡献,这种解耦可能会受到阻碍。受Donaldson-Witten理论库仑分支BRST精确观测量发散的启发,提出了库仑分支关联函数重正化的一种新的方法。这种重正化是基于库仑分支积分和积分之间的关系在一个模块的基本域,并建立BRST精确观测确实在唐纳森-威滕理论解耦。

英文摘要:

The presence of a BRST symmetry in topologically twisted gauge theories makes a precise analysis of these theories feasible. While the global BRST symmetry suggests that correlation functions of BRST exact observables vanish, this decoupling might be obstructed due to a contribution from the boundary of field space. Motivated by divergent BRST exact observables on the Coulomb branch of Donaldson-Witten theory, we put forward a new prescription for the renormalization of correlation functions on the Coulomb branch. This renormalization is based on the relation between Coulomb branch integrals and integrals over a modular fundamental domain, and establishes that BRST exact observables indeed decouple in Donaldson-Witten theory.

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