Spherical Top-Hat Collapse of Viscous Modified Chaplygin Gas in Einstein's Gravity and Loop Quantum Cosmology

2015/01/03 by Ujjal Debnath, Mubasher Jamil, Debnath, Ujjal +1 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Solar and Space Plasma Dynamics #gr-qc

paper · pdf · doi:10.48550/arxiv.1501.00486

7 pages, 14 figures. arXiv admin note: text overlap with arXiv:1401.1270, arXiv:1110.6205 by other authors

arxiv created 2015/01/03 · arxiv updated 2015/01/06

Abstract

In this work, we focus on the collapse of a spherically symmetric perturbation, with a classical top-hat profile, to study the nonlinear evolution of only viscous modified Chaplygin gas (VMCG) perturbations in Einstein's gravity as well as in loop quantum Cosmology (LQC). In the perturbed region, we have investigated the natures of equation of state parameter, square speed of sound and another perturbed quantities. The results have been analyzed by numerical and graphical investigations.

Citations

• Spherical top-hat Collapse of a Viscous Unified Dark Fluid
• Spherical `Top-Hat' Collapse in general Chaplygin gas dominated universes

Cited by

• Viscous Chaplygin Gas Models as a Spherical Top-Hat Collapsing Fluids

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