2016/01/12 by Subhra Bhattacharya, S. Chakraborty, Subenoy Chakraborty
Earth and Planetary Sciences · Physics and Astronomy · #Barotropic fluid #Black Holes and Theoretical Physics #Classical mechanics #Cosmology and Gravitation Theories #Dissipative system #Earth Systems and Cosmic Evolution #Friedmann–Lemaître–Robertson–Walker metric #Isotropy #Mathematical physics #Mechanics #Physics #Quantum mechanics #Spacetime #Theoretical physics #Universe #gr-qc #msc:83F05
paper · pdf · doi:10.1088/0264-9381/33/3/035013
published as Class. Quantum Grav. 33 (2016) 035013
openalex publication_date 2016/01/12 · arxiv created 2016/01/15 · arxiv updated 2016/01/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.