Bounce and cyclic cosmology in extended nonlinear massive gravity

Athens; Caixia Gao (Mississippi U.); Emmanuel N. Saridakis (Natl. Tech. U.; Inst. Astrophys.); McGill U.); Paris; Yi-Fu Cai (Arizona State U.

arxiv: 1207.3786 · v3 · pith:LN2QVKGJnew · submitted 2012-07-14 · 🌌 astro-ph.CO · gr-qc· hep-th

Bounce and cyclic cosmology in extended nonlinear massive gravity

Yi-Fu Cai (Arizona State U. , McGill U.) , Caixia Gao (Mississippi U.) , Emmanuel N. Saridakis (Natl. Tech. U. , Athens , Paris , Inst. Astrophys.) This is my paper

classification 🌌 astro-ph.CO gr-qchep-th

keywords extendedgravitymassivenonlinearpotentialscalar-fieldbouncechosen

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We investigate non-singular bounce and cyclic cosmological evolutions in a universe governed by the extended nonlinear massive gravity, in which the graviton mass is promoted to a scalar-field potential. The extra freedom of the theory can lead to certain energy conditions violations and drive cyclicity with two different mechanisms: either with a suitably chosen scalar-field potential under a given Stuckelberg-scalar function, or with a suitably chosen Stuckelberg-scalar function under a given scalar-field potential. Our analysis shows that extended nonlinear massive gravity can alter significantly the evolution of the universe at both early and late times.

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