Coleman-Weinberg SO(10) grand unified theories as inflationary models

Journal Article · Mon Jul 01 04:00:00 EDT 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.54.1359· OSTI ID:286229

Esposito, G; Miele, G; Santorelli, P ^[1]

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1. Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Mostra d`Oltremare Padiglione 20, 80125 Napoli (Italy)

The flat-space limit of the one-loop effective potential for SO(10) GUT{close_quote}s in spatially flat Friedmann-Robertson-Walker cosmologies is applied to study the dynamics of the early universe. The numerical integration of the corresponding field equations shows that, for such grand unified theories, a sufficiently long inflationary stage is achieved for suitable choices of the initial conditions. However, a severe fine-tuning of these initial conditions is necessary to obtain a large {ital e}-fold number. In the direction with residual symmetry SU(4){sub PS}{circle_times}SU(2){sub {ital L}}{circle_times}SU(2){sub {ital R}}, one eventually finds parametric resonance for suitable choices of the free parameters of the classical potential. This phenomenon leads in turn to the end of inflation. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 286229
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 2 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COSMOLOGY
EARLY UNIVERSE
FIELD EQUATIONS
GRAND UNIFIED THEORY
INFLATIONARY UNIVERSE
POTENTIALS
RESONANCE
SO-10 GROUPS
SU-2 GROUPS
SU-4 GROUPS