Holographic dark energy in chameleon tachyon cosmology

We propose in this paper an interacting holographic dark energy (IHDE) model in chameleon–tachyon cosmology by interaction between the components of the dark sectors. In the formalism, the interaction term emerges from the scalar field coupling matter Lagrangian in the model rather than being insert...

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Published inAstrophysics and space science Vol. 336; no. 2; pp. 461 - 467
Main Authors Farajollahi, H., Ravanpak, A., Fadakar, G. F.
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.12.2011
Springer Nature B.V
Subjects
Astrobiology
Astronomy
Astrophysics
Astrophysics and Astroparticles
Cosmology
Dark energy
Observations and Techniques
Original Article
Physics
Physics and Astronomy
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Tachyon
Interacting holography
Dark energy
Distance modulus
Chameleon
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Summary:We propose in this paper an interacting holographic dark energy (IHDE) model in chameleon–tachyon cosmology by interaction between the components of the dark sectors. In the formalism, the interaction term emerges from the scalar field coupling matter Lagrangian in the model rather than being inserted into the formalism as an external source for the interaction. The correspondence between the tachyon field and the holographic dark energy (HDE) densities allows to reconstruct the tachyon scalar field and its potential in a flat FRW universe. The model can show the accelerated expansion of the universe and satisfies the observational data.
Bibliography:ObjectType-Article-1
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ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-011-0779-6