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An Interacting Two-Fluid Scenario for Dark Energy in an FRW Universe |
| Hassan Amirhashchi1, Anirudh Pradhan2,3**, Bijan Saha3
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1Department of Physics, Islamic Azad University, Mahshahr Branch, Mahshahr, Iran
2Department of Mathematics, Hindu Post-Graduate College, Zamania-232 331, Ghazipur, India
3Laboratory of Information Technologies, Joint Institute for Nuclear Research, 141980 Dubna, Russia
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| Cite this article: |
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Hassan Amirhashchi, Anirudh Pradhan, Bijan Saha 2011 Chin. Phys. Lett. 28 039801 |
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Abstract We study the evolution of the dark energy parameter within the scope of a spatially homogeneous and isotropic Friedmann–Robertson–Walker (FRW) model filled with barotropic fluid and dark energy. To obtain the deterministic solution we choose the scale factor a(t) =√tet, which yields a time-dependent deceleration parameter (DP). In doing so, we consider the case minimally coupled with dark energy to the perfect fluid as well as direct interaction with it.
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| Keywords:
98.80.Es
98.80.-k
95.36.+x
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Received: 18 November 2010
Published: 28 February 2011
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| PACS: |
98.80.Es
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(Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc))
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98.80.-k
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(Cosmology)
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95.36.+x
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(Dark energy)
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