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Title: Stability of the Einstein static universe in Einstein-Cartan theory

The existence and stability of the Einstein static solution have been built in the Einstein-Cartan gravity. We show that this solution in the presence of perfect fluid with spin density satisfying the Weyssenhoff restriction is cyclically stable around a center equilibrium point. Thus, study of this solution is interesting because it supports non-singular emergent cosmological models in which the early universe oscillates indeterminately about an initial Einstein static solution and is thus past eternal.
Authors:
 [1]
  1. Department of Physics, Azarbaijan Shahid Madani University, Tabriz, 53714-161 (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22373537
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 06; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COSMOLOGICAL MODELS; EQUILIBRIUM; GRAVITATION; IDEAL FLOW; MATHEMATICAL SOLUTIONS; SPIN; STABILITY; UNIVERSE