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dc.contributor.author Chaves, M.
dc.contributor.author Singleton, D.
dc.date.accessioned 2019-02-19T19:24:56Z
dc.date.available 2019-02-19T19:24:56Z
dc.date.issued 2008
dc.identifier.citation A Unified Model of Phantom Energy and Dark Matter / M. Chaves, D. Singleton // Symmetry, Integrability and Geometry: Methods and Applications. — 2008. — Т. 4. — Бібліогр.: 32 назв. — англ. uk_UA
dc.identifier.issn 1815-0659
dc.identifier.other 2000 Mathematics Subject Classification: 81R10; 81T10
dc.identifier.uri http://dspace.nbuv.gov.ua/handle/123456789/149254
dc.description.abstract To 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. uk_UA
dc.description.sponsorship This paper is a contribution to the Proceedings of the Seventh International Conference “Symmetry in Nonlinear Mathematical Physics” (June 24–30, 2007, Kyiv, Ukraine). DS acknowledges the CSU Fresno College of Science and Mathematics for a sabbatical leave during the period when this work was completed, and a CSM 2007 Professional Development Grant to attend Symmetry–2007. uk_UA
dc.language.iso en uk_UA
dc.publisher Інститут математики НАН України uk_UA
dc.relation.ispartof Symmetry, Integrability and Geometry: Methods and Applications
dc.title A Unified Model of Phantom Energy and Dark Matter uk_UA
dc.type Article uk_UA
dc.status published earlier uk_UA

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