Investigations of the dynamics and thermodynamics of the early universe for a variety of chaotic inflationary models

Details Investigations of the dynamics and thermodynamics of the early universe for a variety of chaotic inflationary models Investigations of the dynamics and thermodynamics of the early universe for a variety of chaotic inflationary models

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phdt........28p&link_type=abstract

PhD Dissertation, New Mexico State Univ. Las Cruces, NM United States

Physics

Universe, Thermodynamic Properties, Cosmology, Dynamics, Chaos, Scalars, Potential Fields

Scientific paper

The inflationary scenario which was proposed by A. Guth in 1981 changed the picture of the very early universe (10-44 sec is less than or equal to t is less than or equal to 10-32 sec). Despite all its strength in reshaping the picture of the universe, this scenario had shortcomings. The new and chaotic inflationary scenarios have tried to improve the original idea of inflation and remedy its defects. In this dissertation we investigate analytically and numerically a number of potentials in the chaotic version of inflation. The aim is to study their dynamics and some thermodynamic properties in detail. The problems to be solved are problem, and the density fluctuation problem. The potentials studied are single field potentials varying as phin for n is greater than or equal to 2, in the scalar field phi and the so called 'soft' and 'double' field potentials involving two scalar fields. The overall lessons are that the higher power (n is greater than 2) single field potentials are not successful in solving all these problems and that the soft and double field potentials are not very different from single field potentials in their effects on inflation.

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