Turning big bang into big bounce: II. Quantum dynamics
General Relativity and Quantum Cosmology
2011-03-28 v6 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Quantum Physics
Abstract
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 composite 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.
Cite
@article{arxiv.0908.4029,
title = {Turning big bang into big bounce: II. Quantum dynamics},
author = {Przemyslaw Malkiewicz and Wlodzimierz Piechocki},
journal= {arXiv preprint arXiv:0908.4029},
year = {2011}
}
Comments
14 pages, no figures, version accepted for publication in Class. Quant. Grav