Emergent universe model with dissipative effects

2017/12/13 by P. S. Debnath, Partha Sarathi Debnath, B. C. Paul +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena

paper · doi:10.1142/s0217732317502169

openalex publication_date 2017/12/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/25

Abstract

Emergent universe model is presented in general theory of relativity with isotropic fluid in addition to viscosity. We obtain cosmological solutions that permit emergent universe scenario in the presence of bulk viscosity that are described by either Eckart theory or Truncated Israel Stewart (TIS) theory. The stability of the solutions are also studied. In this case, the emergent universe (EU) model is analyzed with observational data. In the presence of viscosity, one obtains emergent universe scenario, which however is not permitted in the absence of viscosity. The EU model is compatible with cosmological observations.

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