How typical is General Relativity in Brans-Dicke chaotic inflation?
| dc.creator | Susperregi, Mikel | |
| dc.date | 1997-12-05 | |
| dc.date.accessioned | 2026-07-07T03:32:05Z | |
| dc.date.available | 2026-07-07T03:32:05Z | |
| dc.description | General Relativity is recovered from Brans-Dicke gravity in the limit of large $ω$. In this article we investigate theories of Brans-Dicke gravity with chaotic inflation, allowing for either a constant or variable value of $ω$, known as extended and hyperextended inflation respectively. The main focus of the paper is placed on the latter. The variation $ω$ with respect to the Brans-Dicke field is based on higher-order corrections analogous to those of the dilaton field in string theory, following the simple principle that the Brans-Dicke and metric fields decouple asymptotically. The question addressed is whether a large value of $ω$ is predominant in most regions of the universe, which would lead to the conclusion that a typical region is then governed by General Relativity. In these theories we find that it is possible to construct inflaton potentials that drive the evolution of the Brans-Dicke field to an appropriate range of values at the end of inflation, such that a large $ω$ is indeed typical in an average region of the universe. However, in general this conclusion does not hold and it is shown that for a wide class of inflaton potentials General Relativity is not a priori a typical theory. | |
| dc.description | Submitted to Phys Rev D. 24 pages, 3 figures. LaTeX, figures in ps format | |
| dc.identifier | https://arxiv.org/abs/gr-qc/9712031 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/9712031 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/36094 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | How typical is General Relativity in Brans-Dicke chaotic inflation? | |
| dc.type | text |