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arXiv · 1301.7419

Cosmological behavior in extended nonlinear massive gravity

Genly Leon·Joel Saavedra·Emmanuel N. Saridakis
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Abstract

We perform a detailed dynamical analysis of various cosmological scenarios in extended (varying-mass) nonlinear massive gravity. Due to the enhanced freedom in choosing the involved free functions, this cosmological paradigm allows for a huge variety of solutions that can attract the universe at late times, comparing to scalar-field cosmology or usual nonlinear massive gravity. Amongst others, it accepts quintessence, phantom, or cosmological-constant-like late-time solutions, which moreover can alleviate the coincidence problem. These features seem to be general and non-sensitive to the imposed ansantzes and model parameters, and thus extended nonlinear massive gravity can be a good candidate for the description of nature.

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Genly Leon, Joel Saavedra, Emmanuel N. Saridakis. 2013-06-04. Cosmological behavior in extended nonlinear massive gravity. https://doi.org/10.1088/0264-9381%2F30%2F13%2F135001

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