Early and Late-time Cosmic Acceleration in Non-minimal Yang-Mills-$f(G)$ Gravity

Abstract

In this paper we show that power-law inflation can be realized in non-minimal gravitational coupling of Yang-Mills field with a general function of the Gauss-Bonnet invariant in the framework of Einstein gravity. Such a non-minimal coupling may appear due to quantum corrections. We also discuss the non-minimal Yang-Mills-$f(G)$ gravity in the framework of modified Gauss-Bonnet action which is widely studied recently. It is shown that both inflation and late-time cosmic acceleration are possible in such a theory.

arXiv comment13 pages, no figures, v2 references added, Minor typos corrected

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