V. M. Zhuravlev* and S. V. Chervon**
Ul’yanovsk State University, Institute of Theoretical Physics, Ul’yanovsk, 432700 Russia
*e-mail: zhuravl@sv.uven.ru
**e-mail: chervon@sv.uven.ru
Received December 30, 1999
Abstract—A model of the evolution of the uniform and isotropic spatially-flat universe, where the inflation
stage emerges naturally into the radiation-dominated stage and the matter-dominated era, is proposed on the
basis of exact solutions of the self-consistent equations of a gravitating self-acting scalar field. It is shown that
the model contains two basic physical mechanisms, one of which is related with the decay of Higgs bosons and
provides for the inflation stage, while the second mechanism is associated with the adiabatic expansion of the
universe filled with matter with a definite equation of state and gives a Friedmann expansion regime. © 2000
MAIK “Nauka/Interperiodica”.
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