Quantum memory of the Universe

Details Quantum memory of the Universe Quantum memory of the Universe

2011-07-29

arxiv.org/abs/1108.0005v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages,4 figures

Scientific paper

We present results concerning propagation of the Gaussian state across the cosmological quantum bounce. The reduced phase space quantization of loop quantum cosmology is applied to the Friedman-Robertson-Walker universe with a free massless scalar field. The dispersion of observables are studied in the context of the Heisenberg uncertainty principle. We show that the bounce transition is the least quantum part of the evolution. We give an interpretation of this surprising result in terms of entropy. We examine the conservation of semiclassicality across the quantum bounce. The cosmic amnesia may occur or not depending on parameters of the quantum state. We show that this issue can be studied observationally. The preliminary estimations based on astronomical data support the Universe without cosmic forgetfulness.

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