Relaxing Nucleosynthesis Constraints on Brans-Dicke Theories

Simple item page
dc.creatorDe Felice, Antonio
dc.creatorMangano, Gianpiero
dc.creatorSerpico, Pasquale D.
dc.creatorTrodden, Mark
dc.date2005-10-12
dc.date2006-11-25
dc.date.accessioned2026-07-07T11:24:51Z
dc.date.available2026-07-07T11:24:51Z
dc.descriptionWe reconsider constraints on Brans-Dicke theories arising from the requirement of successful Big Bang Nucleosynthesis. Such constraints typically arise by imposing that the universe be radiation-dominated at early times, and therefore restricting the contribution that a Brans-Dicke scalar could make to the energy budget of the universe. However, in this paper we show how the dynamics of the Brans-Dicke scalar itself can mimic a portion of the radiation contribution, thereby allowing successful nucleosynthesis with a sizable contribution to the total cosmic energy density. This possibility significantly relaxes the existing bounds on Brans-Dicke fields, and opens the door to new possibilities for early universe cosmology. The necessary fine tunings required by such an arrangement are identified and discussed.
dc.description9 pages, 2 figures, uses RevTeX. Dedicated to Rafael Sorkin, on the occasion of his 60th birthday, and to celebrate his wonderful contributions to physics. Added references, a few comments and numerical results
dc.identifierhttps://arxiv.org/abs/astro-ph/0510359
dc.identifierhttp://arxiv.org/abs/astro-ph/0510359
dc.identifierPhys.Rev.D74:103005,2006
dc.identifierdoi:10.1103/PhysRevD.74.103005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195330
dc.subjectAstrophysics
dc.titleRelaxing Nucleosynthesis Constraints on Brans-Dicke Theories
dc.typetext

Files

Collections

arXiv