Open AccessBianchi Type-I Inflationary Cosmological Models With Constant Deceleration Parameter For Perfect Fluid Distribution In General Relativity
Author(s) -
Laxmi Lal Jat,
AUTHOR_ID,
Atul Tyagi,
Barkha R. Tripathi,
AUTHOR_ID,
AUTHOR_ID
Publication year - 2022
Publication title -
ultra scientist of physical sciences a
Language(s) - English
Resource type - Journals
eISSN - 2319-8044
pISSN - 2231-346X
DOI - 10.22147/jusps-a/340104
Subject(s) - friedmann–lemaître–robertson–walker metric , hubble's law , physics , deceleration parameter , metric expansion of space , big bounce , universe , age of the universe , flatness problem , classical mechanics , general relativity , perfect fluid , cosmological constant , de sitter universe , theoretical physics , cosmology , cosmological model , dark energy , physical cosmology , astrophysics
The models represent expanding and shearing universe and both models start with Big Bang initially and the expansion stops for large time. The spatial volume increases with time representing inflationary scenario. The shear is zero for large value of time representing isotropization of universe. The Hubble parameter determines the age of the universe. The expression for Hubble parameter matches with FRW model.