1995/10/31 by I. Tkachev, I. I. Tkachev · 7 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1016/0370-2693(96)00297-3
published as Phys.Lett. B376 (1996) 35-40 · Some statements are corrected. Also, comments of the referee of Phys. Lett. B are taken into account; 12 pages, no figures, LaTeX
arxiv created 1996/02/07 · openalex publication_date 1996/05/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Symmetry restoration processes during the non-equilibrium stage of ``preheating'' after inflation is studied. It is shown that symmetry restoration is very efficient when the majority of created particles are concentrated at energies much smaller than the temperature T in equilibrium. The strength of symmetry restoration measured in terms of the equivalent temperature can exceed T by many orders of magnitude. In some models the effect can be equivalent to that if the temperature of instant reheating would be close to the Planck scale. This can have an important impact on GUT and axion models.