Interaction between Dark Matter and Dark Energy and the Cosmological Coincidence Problem
We consider a quintessence model of dark energy inspired by scalar-tensor theories of gravity where the scalar field is nonminimally coupled to gravity and dark matter. By considering exponential potential as self-interaction potential, the stability and existence of the critical points are discusse...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2014/569702 |
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| _version_ | 1832565356849266688 |
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| author | Kourosh Nozari Noushin Behrouz Narges Rashidi |
| author_facet | Kourosh Nozari Noushin Behrouz Narges Rashidi |
| author_sort | Kourosh Nozari |
| collection | DOAJ |
| description | We consider a quintessence model of dark energy inspired by scalar-tensor theories of gravity where the scalar field is nonminimally coupled to gravity and dark matter. By considering exponential potential as self-interaction potential, the stability and existence of the critical points are discussed in details. With nonminimally coupled dark sector with gravity, we obtain scaling solutions to address the coincidence problem by considering complex velocity for dark matter. The statefinder diagnostic shows that the equation of state reaches ΛCDM model in the future. |
| format | Article |
| id | doaj-art-21432cb72f364e80ab7ff048efa1da05 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-21432cb72f364e80ab7ff048efa1da052025-02-03T01:07:49ZengWileyAdvances in High Energy Physics1687-73571687-73652014-01-01201410.1155/2014/569702569702Interaction between Dark Matter and Dark Energy and the Cosmological Coincidence ProblemKourosh Nozari0Noushin Behrouz1Narges Rashidi2Department of Physics, Faculty of Basic Sciences, University of Mazandaran, P.O. Box 47416-95447, Babolsar, IranDepartment of Physics, Faculty of Basic Sciences, University of Mazandaran, P.O. Box 47416-95447, Babolsar, IranDepartment of Physics, Faculty of Basic Sciences, University of Mazandaran, P.O. Box 47416-95447, Babolsar, IranWe consider a quintessence model of dark energy inspired by scalar-tensor theories of gravity where the scalar field is nonminimally coupled to gravity and dark matter. By considering exponential potential as self-interaction potential, the stability and existence of the critical points are discussed in details. With nonminimally coupled dark sector with gravity, we obtain scaling solutions to address the coincidence problem by considering complex velocity for dark matter. The statefinder diagnostic shows that the equation of state reaches ΛCDM model in the future.http://dx.doi.org/10.1155/2014/569702 |
| spellingShingle | Kourosh Nozari Noushin Behrouz Narges Rashidi Interaction between Dark Matter and Dark Energy and the Cosmological Coincidence Problem Advances in High Energy Physics |
| title | Interaction between Dark Matter and Dark Energy and the Cosmological Coincidence Problem |
| title_full | Interaction between Dark Matter and Dark Energy and the Cosmological Coincidence Problem |
| title_fullStr | Interaction between Dark Matter and Dark Energy and the Cosmological Coincidence Problem |
| title_full_unstemmed | Interaction between Dark Matter and Dark Energy and the Cosmological Coincidence Problem |
| title_short | Interaction between Dark Matter and Dark Energy and the Cosmological Coincidence Problem |
| title_sort | interaction between dark matter and dark energy and the cosmological coincidence problem |
| url | http://dx.doi.org/10.1155/2014/569702 |
| work_keys_str_mv | AT kouroshnozari interactionbetweendarkmatteranddarkenergyandthecosmologicalcoincidenceproblem AT noushinbehrouz interactionbetweendarkmatteranddarkenergyandthecosmologicalcoincidenceproblem AT nargesrashidi interactionbetweendarkmatteranddarkenergyandthecosmologicalcoincidenceproblem |