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. (C) 2014 The Authors. Published by Elsevier B.V.