Cosmological Big Bounce Transition

Details Cosmological Big Bounce Transition Cosmological Big Bounce Transition

2011-01-02

arxiv.org/abs/1101.0389v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, no figures; talk presented at the 11th international symposium `Frontiers of Fundamental Physics [FFP11]', 6-9 July,

Scientific paper

We analyze the big bounce transition of the quantum FRW model in the setting of the nonstandard loop quantum cosmology (LQC). Elementary observables are used to quantize compound observables. The spectrum of the energy density operator is bounded and continuous. The spectrum of the volume operator is bounded from below and discrete. It has equally distant levels defining a quantum of the volume. The discreteness may imply a foamy structure of spacetime at semiclassical level which may be detected in astro-cosmo observations. The nonstandard LQC method has a free parameter that should be fixed in some way to specify the big bounce transition.

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