In this paper we study the tachyon cosmology in non-interacting and
interacting cases in non-flat FRW universe. Then we reconstruct the potential
and the dynamics of the tachyon field which describe tachyon cosmology.Comment: 10 pages, 2 figures. Version to appear in PLB (2009
In this paper, we study interacting modified Chaplygin gas (MCG) which has shear and bulk viscosities. We consider sign-changeable interaction between MCG and matter, then investigate the effects of shear and bulk viscosities on the cosmological parameters such as energy, density, Hubble expansion parameter, scale factor and deceleration parameter.
In the present paper, we study the braneworld scenarios in the presence of
quintom dark energy coupled by gravity. The first-order formalism for the bent
brane (for both de Sitter and anti-de Sitter geometry), leads us to discuss the
shape invariance method in the bent brane systems. So, by using the
fluctuations of metric and quintom fields we obtain the Schrodinger equation.
Then we factorize the corresponding Hamiltonian in terms of multiplication of
the first-order differential operators. These first-order operators lead us to
obtain the energy spectrum with the help of shape invariance method.Comment: 13 pages, no figur
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.