Semiclassical suppression of weak anisotropies of a generic Universe

Details Semiclassical suppression of weak anisotropies of a generic Universe Semiclassical suppression of weak anisotropies of a generic Universe

2009-05-22

arxiv.org/abs/0905.3695v2

Europhys.Lett.86:69001,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, to appear in Europhys.Lett

Scientific paper

10.1209/0295-5075/86/69001

A semiclassical mechanism which suppresses the weak anisotropies of an inhomogeneous cosmological model is developed. In particular, a wave function of this Universe having a meaningful probabilistic interpretation is obtained that is in agreement with the Copenhagen School. It describes the evolution of the anisotropies with respect to the isotropic scale factor which is regarded as a semiclassical variable playing an observer-like role. Near the cosmological singularity the solution spreads over all values of the anisotropies while, when the Universe expands sufficiently, the closed Friedmann-Robertson-Walker model appears to be the favorite state.

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