Large scale EPR correlations and cosmic gravitational waves

Details Large scale EPR correlations and cosmic gravitational waves Large scale EPR correlations and cosmic gravitational waves

2011-05-10

arxiv.org/abs/1105.1897v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 figures

Scientific paper

We study how quantum correlations survive at large scales in spite of their exposition to stochastic backgrounds of gravitational waves. We consider Einstein-Podolski-Rosen (EPR) correlations built up on the polarizations of photon pairs and evaluate how they are affected by the cosmic gravitational wave background (CGWB). We evaluate the quantum decoherence of the EPR correlations in terms of a reduction of the violation of the Bell inequality as written by Clauser, Horne, Shimony and Holt (CHSH). We show that this decoherence remains small and that EPR correlations can in principle survive up to the largest cosmic scales.

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