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A cosmological bound on $e^+ e^-$ mass difference

We demonstrate that CPT-violation due to $e^+ e^-$ mass difference generates a non-zero photon mass. As a result the cosmological bounds on the photon mass lead to the bounds on $e^+ e^-$ mass difference which are at least by 10 orders of magnitude stronger than the direct experimental bound.

preprint2014arXivOpen access
A. D. DolgovV. A. Novikov
astro-ph.COhep-phhep-th
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A. D. DolgovV. A. Novikov

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