Chameleon field and the late time acceleration of the universe

In the present work, it is shown that a chameleon scalar field having a nonminimal coupling with dark matter can give rise to a smooth transition from a decelerated to an accelerated phase of expansion for the universe. It is surprising to note that the coupling with the chameleon scalar field hardl...

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Veröffentlicht in:	arXiv.org 2008-01
Hauptverfasser:	Banerjee, Narayan, Das, Sudipta, Ganguly, Koyel
Format:	Artikel
Sprache:	eng
Schlagworte:	Acceleration Coupling Dark matter Deceleration Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Physics - Earth and Planetary Astrophysics Physics - General Relativity and Quantum Cosmology Physics - High Energy Astrophysical Phenomena Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics Universe
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