A Unified Model of Phantom Energy and Dark Matter
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 ex...
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| Опубліковано в: : | Symmetry, Integrability and Geometry: Methods and Applications |
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| Дата: | 2008 |
| Автори: | , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Інститут математики НАН України
2008
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/149254 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | 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. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862560819843170304 |
|---|---|
| author | Chaves, M. Singleton, D. |
| author_facet | Chaves, M. Singleton, D. |
| citation_txt | 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. |
| collection | DSpace DC |
| container_title | Symmetry, Integrability and Geometry: Methods and Applications |
| description | 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.
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| first_indexed | 2025-11-25T23:08:42Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-149254 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1815-0659 |
| language | English |
| last_indexed | 2025-11-25T23:08:42Z |
| publishDate | 2008 |
| publisher | Інститут математики НАН України |
| record_format | dspace |
| spelling | Chaves, M. Singleton, D. 2019-02-19T19:24:56Z 2019-02-19T19:24:56Z 2008 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. 1815-0659 2000 Mathematics Subject Classification: 81R10; 81T10 https://nasplib.isofts.kiev.ua/handle/123456789/149254 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. 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. en Інститут математики НАН України Symmetry, Integrability and Geometry: Methods and Applications A Unified Model of Phantom Energy and Dark Matter Article published earlier |
| spellingShingle | A Unified Model of Phantom Energy and Dark Matter Chaves, M. Singleton, D. |
| title | A Unified Model of Phantom Energy and Dark Matter |
| title_full | A Unified Model of Phantom Energy and Dark Matter |
| title_fullStr | A Unified Model of Phantom Energy and Dark Matter |
| title_full_unstemmed | A Unified Model of Phantom Energy and Dark Matter |
| title_short | A Unified Model of Phantom Energy and Dark Matter |
| title_sort | unified model of phantom energy and dark matter |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/149254 |
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