CPT Violation and Decoherence in Quantum Gravity
arXiv:0904.0606 · doi:10.1088/1742-6596/171/1/012007
Abstract
In this brief review I discuss ways and tests of CPT-Violation in the context of quantum gravity theories with space-time foam vacua, which entail quantum decoherence of matter propagating in such backgrounds. I cover a wide variety of sensitive probes, ranging from cosmic neutrinos to meson factories. I pay particular emphasis on associating the latter with specific, probably unique ("smoking-gun"), effects of this type of CPT Violation, related to a modification of Einstein-Podolsky-Rosen (EPR) correlations in the entangled states of the relevant neutral mesons. I also present some semi-microscopic estimates of these latter effects, in the context of a specific string-inspired model of space-time foam ("D-particle foam").
37 pages latex, 8 eps figures incorporated, uses special macros. Based on plenary talk at DISCRETE '08 Conference, IFIC, Valencia (Spain), December 11-16 2008, submitted to J. Phys. Conf. Series (IOP, UK)
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