English

Inhomogeneous imperfect fluid spherical models without Big-Bang singularity

General Relativity and Quantum Cosmology 2009-10-30 v1

Abstract

So far all known singularity-free cosmological models are cylindrically symmetric. Here we present a new family of spherically symmetric non-singular models filled with imperfect fluid and radial heat flow, and satisfying the weak and strong energy conditions. For large tt anisotropy in pressure and heat flux tend to vanish leading to a perfect fluid. There is a free function of time in the model, which can be suitably chosen for non-singular behaviour and there exist multiplicity of such choices.

Keywords

Cite

@article{arxiv.gr-qc/9705038,
  title  = {Inhomogeneous imperfect fluid spherical models without Big-Bang singularity},
  author = {Naresh Dadhich},
  journal= {arXiv preprint arXiv:gr-qc/9705038},
  year   = {2009}
}

Comments

8 pages, LaTeX version

R2 v1 2026-07-22T12:53:08.427Z