Gauge fixation and global phase time for minisuperspaces

Details Gauge fixation and global phase time for minisuperspaces Gauge fixation and global phase time for minisuperspaces

2001-08-30

arxiv.org/abs/gr-qc/0108081v1

J.Math.Phys. 40 (1999) 4527-4537

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

18 pages

Scientific paper

10.1063/1.532984

Homogeneous and isotropic cosmological models whose Hamilton-Jacobi equation is separable are deparametrized by turning their action functional into that of an ordinary gauge system. Canonical gauge conditions imposed on the gauge system are used to define a global phase time in terms of the canonical coordinates and momenta of the minisuperspaces. The procedure clearly shows how the geometry of the constraint surface restricts the choice of time; the consequences that this has on the path integral quantization are discussed.

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