Can Massive Gravitons be an Alternative to Dark Energy?

Details Can Massive Gravitons be an Alternative to Dark Energy? Can Massive Gravitons be an Alternative to Dark Energy?

2009-07-29

arxiv.org/abs/0907.5190v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

16 pages, 7 figures, corrected typos

Scientific paper

In this work, we explore some cosmological implications of the model proposed by M. Visser in 1998. In his approach, Visser intends to take in account mass for the graviton by means of an additional bimetric tensor in the Einstein's field equations. Our study has shown that a consistent cosmological model arises from Visser's approach. The most interesting feature is that an accelerated expansion phase naturally emerges from the cosmological model, and we do not need to postulate any kind of dark energy to explain the current observational data for distant type Ia supernovae (SNIa).

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