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Gravitational Stability of inflaton and torsion in Einstein-Cartan-Klein-Gordon cosmology with kinky potentials | L.C. Garcia de Andrade
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22 Dec 2001 | Subject: | gr-qc | Affiliation: | Departamento de Fisica Teorica-IF-UERJ | Abstract: | Gravitational stability of torsion and inflaton field in a four-dimensional spacetime de Sitter solution in scalar-tensor cosmology where Cartan torsion propagates is investigated in detail. Inflaton and torsion evolution equations are derived by making use of a Lagrangean method. Stable and unstable modes for torsion and inflatons are found to be dependent of the background torsion and inflaton fields. Present astrophysical observations favour a stable mode for torsion since this would explain why no relic torsion imprint has been found on the Cosmic Background Radiation in the universe. | Source: | arXiv, gr-qc/0201071 | Services: | Forum | Review | PDF | Favorites |
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