A Unified Model of Phantom Energy and Dark Matter

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dc.creatorChaves, Max
dc.creatorSingleton, Douglas
dc.date2008-01-30
dc.date.accessioned2026-07-07T12:19:56Z
dc.date.available2026-07-07T12:19:56Z
dc.descriptionTo explain the acceleration of the cosmological expansion researchers have considered an unusual form of mass-energy generically called dark energy. Dark energy has a ratio of pressure over mass density which obeys $w=p/ρ<-1/3$. This form of mass-energy leads to accelerated expansion. An extreme form of dark energy, called phantom energy, has been proposed which has $w=p/ρ<-1$. This possibility is favored by the observational data. The simplest model for phantom energy involves the introduction of a scalar field with a negative kinetic energy term. Here we show that theories based on graded Lie algebras naturally have such a negative kinetic energy and thus give a model for phantom energy in a less ad hoc manner. We find that the model also contains ordinary scalar fields and anti-commuting (Grassmann) vector fields which act as a form of two component dark matter. Thus from a gauge theory based on a graded algebra we naturally obtained both phantom energy and dark matter.
dc.descriptionThis is a contribution to the Proc. of the Seventh International Conference ''Symmetry in Nonlinear Mathematical Physics'' (June 24-30, 2007, Kyiv, Ukraine), published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
dc.identifierhttps://arxiv.org/abs/0801.4728
dc.identifierhttp://arxiv.org/abs/0801.4728
dc.identifierSIGMA 4:009,2008
dc.identifierdoi:10.3842/SIGMA.2008.009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/212929
dc.subjectHigh Energy Physics - Theory
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleA Unified Model of Phantom Energy and Dark Matter
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