Generalized particle dynamics in anti de Sitter spaces: A source for dark energy
| Autor: | Jan-Willem van Holten, Subir Ghosh, Supratik Pal, Sudipta Das |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Physics
High Energy Physics - Theory Cosmology and Nongalactic Astrophysics (astro-ph.CO) Spacetime Equation of state (cosmology) media_common.quotation_subject Dark matter FOS: Physical sciences Astronomy and Astrophysics General Relativity and Quantum Cosmology (gr-qc) Universe Redshift General Relativity and Quantum Cosmology symbols.namesake High Energy Physics - Theory (hep-th) Space and Planetary Science Friedmann–Lemaître–Robertson–Walker metric Dark energy symbols Anti-de Sitter space Mathematical Physics Mathematical physics media_common Astrophysics - Cosmology and Nongalactic Astrophysics |
| Popis: | We consider the generalized particle dynamics, proposed by us, in brane world formalisms for an asymptotically anti de Sitter background. The present framework results in a new model that accounts for the late acceleration of the universe. An effective Dark Energy equation of state, exhibiting a phantom like behaviour, is generated. The model is derived by embedding the physical FRW universe in a $(4+1)$-dimensional effective space-time, induced by the generalized particle dynamics. We corroborate our results with present day observed cosmological parameters. 18 pages, 6 figures. Final version to appear in IJMPD |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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