Dynamics of interacting quintessence
| Autor: | Murli Manohar Verma, M. Shahalam, Shankar Dayal Pathak, M. Yu. Khlopov, Ratbay Myrzakulov |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Physics and Astronomy (miscellaneous) Order (ring theory) Sigma FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Coupling (probability) Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Omega General Relativity and Quantum Cosmology Phase space Attractor Beta (velocity) Engineering (miscellaneous) Quintessence Mathematical physics |
| Zdroj: | European Physical Journal C |
| Popis: | In this paper, we investigate coupled quintessence with scaling potential assuming specific forms of the coupling as $A$ namely, $\alpha \dot{\rho_m}$, $\beta \dot{\rho_{\phi}}$ and $\sigma (\dot{\rho_m}+\dot{\rho_{\phi}})$, and present phase space analysis for three different interacting models. We focus on the attractor solutions that can give rise to late time acceleration with $\Omega_{DE}/\Omega_{DM}$ of order unity in order to alleviate the coincidence problem. Comment: 11 pages, 3 figures, matches with the published version |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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