Chaplygin-gas Solutions of f(R) Gravity
General Relativity and Quantum Cosmology
2016-11-24 v4 Cosmology and Nongalactic Astrophysics
Abstract
We explore exact f(R) gravity solutions that mimic Chaplygin-gas inspired LCDM cosmology. Starting with the original and modified Chaplygin gas equations of state, we reconstruct the forms of f(R) Lagrangians. The resulting solutions are generally quadratic in the Ricci scalar, but have appropriate LCDM solutions in limiting cases. These solutions, given appropriate initial conditions, can be potential candidates for scalar field-driven early universe expansion (inflation) and dark energy-driven late-time cosmic acceleration.
Keywords
Cite
@article{arxiv.1603.05535,
title = {Chaplygin-gas Solutions of f(R) Gravity},
author = {Maye Elmardi and Amare Abebe and Abiy Tekola},
journal= {arXiv preprint arXiv:1603.05535},
year = {2016}
}
Comments
11 pages, no figures; more discussions and references added. Accepted in Int. J. of Geometric Methods in Modern Physics (IJGMMP)