Natural Entropy Production in an Inflationary Model for a Polarized Vacuum

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dc.creatorBerman, Marcelo Samuel
dc.creatorSom, Murari M.
dc.date2007-01-06
dc.date2007-04-21
dc.date.accessioned2026-07-07T12:00:26Z
dc.date.available2026-07-07T12:00:26Z
dc.descriptionThough entropy production is forbidden in standard FRW Cosmology, Berman and Som presented a simple inflationary model where entropy production by bulk viscosity, during standard inflation without ad hoc pressure terms can be accommodated with Robertson-Walker's metric, so the requirement that the early Universe be anisotropic is not essential in order to have entropy growth during inflationary phase, as we show. Entropy also grows due to shear viscosity, for the anisotropic case. The intrinsically inflationary metric that we propose can be thought of as defining a polarized vacuum, and leads directly to the desired effects without the need of introducing extra pressure terms.
dc.description7 pages including front one. Accepted to publication, Astrophysics and Space Science, subjected to a minor correction, already submitted
dc.identifierhttps://arxiv.org/abs/physics/0701070
dc.identifierhttp://arxiv.org/abs/physics/0701070
dc.identifierAstrophys.SpaceSci.310:277-279,2007
dc.identifierdoi:10.1007/s10509-007-9514-8
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206845
dc.subjectGeneral Physics
dc.subjectClassical Physics
dc.titleNatural Entropy Production in an Inflationary Model for a Polarized Vacuum
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