Dirac prescription from BRST symmetry in FRW space-time
General Relativity and Quantum Cosmology
2015-06-12 v2
Abstract
A procedure to define the BRST charge from the Noether one in extended phase space is given. It is outlined how this prescription can be applied to a Friedmann-Robertson-Walker space-time with a differential gauge condition and it allows us to reproduce the results of [19]. Then we discuss the cohomological classes associated with functions in extended phase space having ghost number one and we recover the frozen formalism for classical observables. Finally, we consider the quantization of BRST-closed states and we define a scalar product which implements the superHamiltonian constraint.
Keywords
Cite
@article{arxiv.1301.4122,
title = {Dirac prescription from BRST symmetry in FRW space-time},
author = {Francesco Cianfrani and Giovanni Montani},
journal= {arXiv preprint arXiv:1301.4122},
year = {2015}
}
Comments
11 pages, typos fixed