Dark Energy and Dark Matter in f(R) Gravity and an Alternative Chameleon Mechanism

2013/09/13 by Adam Kelleher, Kelleher, Adam
Physics and Astronomy · #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #astro-ph.CO #gr-qc

paper · pdf · doi:10.48550/arxiv.1309.3523

arxiv created 2013/09/13 · arxiv updated 2013/09/16

Abstract

Metric f(R) gravity theories behave like GR with cosmological constant when f"(R) = 0, and like scalar-tensor theories elsewhere. I investigate the transition from f"(R) ≠ 0 to f"(R) = 0, and show that this theory may offer a way to explain Dark Energy and/or Dark Matter without having to make use of the chameleon mechanism to agree with solar system tests.

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