Cosmology With Axionic-quintessence Coupled with Dark Matter
arXiv:1302.1331 · doi:10.1088/0264-9381/30/15/155011
Abstract
We study the possibility of explaining the late time acceleration with an axion field which is coupled with the dark matter sector of the energy budget of the Universe. The axion field arises from the Ramond-Ramond sector of the Type-IIB string theory. We study the background evolution of the Universe as well as the growth of the matter perturbation in the linear regime. We subsequently use the observational data from Sn-Ia, BAO measurements, measurements of the Hubble parameter as well as the observational data for the growth of the matter perturbation to constrain our model. Our results show that coupled axion models are allowed to have larger deviation from cosmological constant by the present observational data.
8 pages, 8 eps figures. Revised Version. Published in Classical and Quantum Gravity
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Cited by in corpus (8)
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- Dynamical Systems Analysis of K-essence Model
- Prospects of probing quintessence with HI 21-cm intensity mapping survey
- Static structure of chameleon dark Matter as an explanation of dwarf spheroidal galactic core
- Cosmological Unification, Dark Energy and the Origin of Neutrino Mass
- Interacting Quintessence and Growth of Structure