Gaugeon Formalism for Perturbative Quantum Gravity
arXiv:1312.7206 · doi:10.1140/epjc/s10052-014-2737-2
Abstract
In this paper we investigate the Yokoyama gaugeon formalism for perturbative quantum gravity in a general curved spacetime. Within the gaugeon formalism, we extend the configuration space by introducing vector gaugeon fields describing a quantum gauge degree of freedom. Such an extended theory of perturbative gravity admits quantum gauge transformations leading to a natural shift in the gauge parameter. Further we impose the Gupta-Bleuler type subsidiary condition to remove the unphysical gaugeon modes. To replace the Gupta-Bleuler type condition by more acceptable Kugo-Ojima type subsidiary condition we analyze the BRST symmetric gaugeon formalism. Further, the physical Hilbert space is constructed for the perturbative quantum gravity which remains invariant under both the BRST symmetry and the quantum gauge transformations.
8 pages, No figure, Published version
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- Finite Field-dependent Symmetry in Thirring Model
- Finite BRST Mapping in Higher Derivative Models
- Quantum gauge symmetry of reducible gauge theory
- Lorentz-violating gaugeon formalism for rank-2 tensor theory
- Gauge Freedom in Path Integrals in Abelian Gauge Theory
- Gaugeon formalism for the two-form gauge fields
- Quantization of Yang-Mills Theory in de Sitter Spacetime