General Procedure of Gauge Fixings and Ghosts

Abstract

We revisit the general procedure of gauge fixings and ghosts based on BRST invariance principle. It is shown that when this is applied to the higher-derivative gauge fixings, it gives the correct structure of gauge fixings and ghosts including "third ghost", previously derived at one-loop level. This procedure is solely based on the symmetry principle and is valid at full order.

arXiv comment8 pages, v2: minor corrections

References in corpus (3)

• Higher Derivative Gravity and Asymptotic Safety in Diverse Dimensions
• Towards the determination of the dimension of the critical surface in asymptotically safe gravity
• Ultraviolet Fixed Points in Conformal Gravity and General Quadratic Theories

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• The background information about perturbative quantum gravity
• FeynGrav 4.0
• Covariant BRST Quantization of Unimodular Gravity II -- Formulation with a vector antighost --