skip to main content

SciTech ConnectSciTech Connect

Title: Cosmological models with Yang-Mills fields

Cosmological models with an SU(2) Yang-Mills field are studied. For a specific model with a minimally coupled Yang-Mills Lagrangian, which includes an arbitrary function of the second-order term and a fourth-order term, a corresponding reconstruction program is proposed. It is shown that the model with minimal coupling has no de Sitter solutions, for any nontrivial function of the second-order term. To get de Sitter solutions, a gravitational model with nonminimally coupled Yang-Mills fields is then investigated. It is shown that the model with non-minimal coupling has in fact a de Sitter solution, even in absence of the cosmological constant term.
Authors:
; ; ;  [1]
  1. Campus UAB, Facultat de Ciencies, Instituto de Ciencias del Espacio and Institut d'Estudis Espacials de Catalunya (Spain)
Publication Date:
OSTI Identifier:
22212678
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 76; Journal Issue: 8; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COSMOLOGICAL CONSTANT; COSMOLOGICAL MODELS; DE SITTER GROUP; DE SITTER SPACE; LAGRANGIAN FUNCTION; YANG-MILLS THEORY