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18 February 2025 |
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Article overview
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Physical vacuum and cosmic coincidence problem | Arthur D. Chernin
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4 Jul 2001 | Journal: | New Astron. 7 (2002) 113-116 | Subject: | astro-ph | Affiliation: | Sternberg Astronomical Institute, Moscow University | Abstract: | 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 well-known 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 $ sim 10^{60} M_{Pl}^{-1}$? 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. | Source: | arXiv, astro-ph/0107071 | Services: | Forum | Review | PDF | Favorites |
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