Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-07-22
Astronomy and Astrophysics
Astrophysics
Invited talk on the International Workshop Frontiers of Particle Astrophysics, Kiev, Ukraine, June 21-24, 2004
Scientific paper
The Hamiltonian approach to General Relativity is developed similarly to the Wheeler-DeWitt Hamiltonian cosmology, where the cosmological scale factor is treated as a time-like dynamic variable and its canonical momentum is considered as an evolution generator in the field space of events with the postulate about a physical vacuum as a state with the minimal eigenvalue of this generator. The cosmological scale factor is extracted from the Hamiltonian General Relativity without double counting of the spatial metric determinant in contrast to the standard cosmological perturbation theory. The Friedmann-like equations in the exact theory are derived. A new version of cosmological perturbation theory keeps the form of the Newton interactions in an early Universe. We show how the considered Hamiltonian approach to GR can solve the topical problems of modern cosmology and quantum theory of gravitation. cosmology and quantum theory of gravitation.
Barbashov B. M.
Pervushin Victor N.
Zinchuk V. A.
Zorin Andrei G.
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