Eur. Phys. J. C 20, 139-146
DOI: 10.1007/s100520100625
Decay of cosmological constant in self-consistent inflation
I. Dymnikova1 and M. Khlopov2, 31 Institute of Mathematics and Informatics, University of Warmia and Mazury in Olsztyn, Zolnierska 14, 10-561 Olsztyn, Poland
2 Center for CosmoParticle Physics "Cosmion" , 125047 Moscow, Russia
3 Institut des Hautes Etudes Scientifiques, 91440 Bures-sur-Yvette, France
(Received: 28 September 2000 / Revised version: 16 January 2001 / Published online: 25 April 2001 -© Springer-Verlag / Società Italiana di Fisica 2001 )
Abstract
The symmetric vacuum state
in gauge theories with spontaneous symmetry breaking is symmetric
in
both internal and space-time variables. We consider this vacuum
state
as a Bose condensate of physical Higgs particles,
defined over an asymmetric vacuum state, and identify the
energy density of their self-interaction
with the cosmological constant 
in the Einstein equation.
In this picture, spontaneous symmetry breaking proceeds as
decay.
Decoherence of coherent oscillations of a scalar field in the
course
of decay provides
the effective mechanism for damping of coherent oscillations,
leading to the regime of slow evaporation of a Bose condensate.
This mechanism is responsible for
self-consistent inflation without fine-tuning of
the potential parameters.
The physical self-consistency in this model is provided
by incorporating the origin of the cosmological
constant in the dynamics of spontaneous breaking of particle
symmetries.
© Società Italiana di Fisica, Springer-Verlag 2001
