A model of the emergent Universe in inhomogeneous spacetime. (12th January 2016)

• Record Type: Journal Article
• Authors: Bhattacharya, Subhra; Chakraborty, S
• Is Part Of: Classical and quantum gravity. Volume 33:Number 3(2016:Feb.)
• Publication Date: 2016-01-12
• Subjects: emergent Universe -- inhomogeneous spacetime -- particle creation; Quantum gravity -- Periodicals; Gravitation -- Periodicals; Relativity (Physics) -- Periodicals; Space and time -- Periodicals; Periodicals; 521.1
• DOI: 10.1088/0264-9381/33/3/035013
• Languages: English
• ISSNs: 0264-9381

Abstract

Abstract: The scenario of an emergent Universe is constructed in the background of an inhomogeneous spacetime model with an asymptotically (at spatial infinity) FRW spacetime. The cosmic substratum consists of two non-interacting components, namely (a) homogeneous and isotropic fluid that is dissipative in nature and (b) an inhomogeneous and anisotropic barotropic fluid. In the non-equilibrium thermodynamic prescription (second order deviations), the particle creation mechanism is considered the cause for the dissipative phenomena. It is found that for a constant value of the particle creation rate parameter there exists a scenario of an emergent Universe.