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arXiv · 1503.04197

Field-dependent symmetries in Friedmann-Robertson-Walker models

Sudhaker Upadhyay
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Abstract

We consider effective actions of the cosmological Friedmann-Robertson-Walker (FRW) models and discuss their fermionic rigid BRST invariance. Further, we demonstrate the finite field-dependent BRST transformations as a limiting case of continuous field-dependent BRST transformations described in terms of continuous parameter $\kappa$. The Jacobian under such finite field-dependent BRST transformations is computed explicitly, which amounts an extra piece in the effective action within functional integral. We show that for a particular choice of the parameter the finite field-dependent BRST transformation maps the generating functional for FRW models from one gauge to another.

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Sudhaker Upadhyay. 2015-03-13. Field-dependent symmetries in Friedmann-Robertson-Walker models. https://doi.org/10.1016/j.aop.2015.03.002

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