CPT and Superstring

Details CPT and Superstring CPT and Superstring

1996-07-25

arxiv.org/abs/hep-ph/9607434v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, LaTeX, 4 figures (included)

Scientific paper

We discuss the possibility that CPT violation may appear as a consequence of microscopic decoherence due to quantum-gravity effects, that we describe using a density-matrix formalism motivated by our studies of non-critical string theory. The maximum possible order of magnitude of such decohering CPT-violating effects is not far from the sensitivity of present experiments on the neutral kaon system, and we review a simple parametrization for them. We also review a recent data analysis carried out together with the CPLEAR collaboration, which bounds any such decohering CPT-violating parameters to be $\lappeq 10^{-19}$ GeV.

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