The prospects for extended phase space approach to quantization of gravity

Details The prospects for extended phase space approach to quantization of gravity The prospects for extended phase space approach to quantization of gravity

2004-12-17

arxiv.org/abs/gr-qc/0412083v1

Grav.Cosmol. 11 (2005) 183-188

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, talk presented at the VI International Conference on cosmoparticle physics "Cosmion-2004", September 2004

Scientific paper

A brief review of main features of the new approach named ``quantum geometrodynamics in extended phase space'' is given and its possible prospects are discussed. Gauge degrees of freedom are treated as a subsystem of the Universe which affects the evolution of the physical subsystem. Three points can be singled out when the gauge subsystem shows itself as a real constituent of the Universe: a chosen gauge condition determines the form of equation for the physical part of wave function, the form of density matrix and the measure in physical subspace. An example is considered when a physically relevant choice of gauge condition leads to almost diagonal density matrix. The analogy between a transition to another reference frame (another basis in physical subspace) and a transition to accelerating reference frame in Rindler space is suggested.

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