Hubble Parameter Corrected Interactions in Cosmology. (14th April 2014)

• Record Type: Journal Article
• Authors: Sadeghi, J.; Khurshudyan, M.; Hakobyan, M.; Farahani, H.
• Other Names: Vagenas Elias C. Academic Editor.
• Is Part Of: Advances in high energy physics. Volume 2014(2014)
• Publication Date: 2014-04-14
• Subjects: Particles (Nuclear physics) -- Periodicals; Particles (Nuclear physics); Periodicals; 539.76
• DOI: 10.1155/2014/129085
• Languages: English
• ISSNs: 1687-7357

Abstract

Abstract : We make steps in a new direction by considering fluids with EoS of more general form F ( ρ, P ) = 0 . It is thought that there should be interaction between cosmic fluids, but this assumption for this stage carries only phenomenological character opening a room for different kinds of manipulations. In this paper we will consider a modification of an interaction Q, where we accept that interaction parameter b 1 (order of unity) in Q = 3 H b 1 ρ is time dependent and presented as a linear function of Hubble parameter H of the form b 0 + b t H, where b and b 0 are constants. We consider two different models including modified Chaplygin gas and polytropic gas which have bulk viscosity. Then, we investigate problem numerically and analyze behavior of different cosmological parameters concerning fluids and behavior of the universe.