Physical Vacuum and Cosmic Coincidence Problem

A framework is suggested in which the energy integrals of the Friedmann cosmology are identified as genuine time-independent physical characteristics for both vacuum and non-vacuum forms of cosmic energy. The integrals are found to be numerically coincident within two orders of magnitude. It is assumed that this coincidence reveals a symmetry that relates vacuum to non-vacuum forms of cosmic energy at fundamental level. The symmetry shows the cosmic coincidence problem and the naturalness problem as two inter-related aspects of a more general problem: Why are the energy integrals numerically coincident and equal to ∼ 10M Pl ? A simple kinetics model of cosmological freeze out is used to examine how – at least, in principle – the electroweak scale physics might explain the nature of the symmetry between vacuum and non-vacuum cosmic energies and determine the value of the energy integrals in terms of the fundamental energy scales.