2012/10/31 by Luisa Jaime, Luisa G. Jaime, Marcelo Salgado +5
Earth and Planetary Sciences · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Geophysics and Gravity Measurements #astro-ph.CO #gr-qc
paper · pdf · doi:10.48550/arxiv.1211.0015
8 pages (no page numbers), 5 figures (10 panels). Prepared for the Proceedings of Relativity and Gravitation: 100 years after Einstein in Prague, Prague, 25-29 June, 2012
arxiv created 2012/10/31 · openalex publication_date 2012/10/31 · arxiv updated 2012/11/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Using an approach that treats the Ricci scalar itself as a degree of freedom, we analyze the cosmological evolution within an f(R) model that has been proposed recently (exponential gravity) and that can be viable for explaining the accelerated expansion and other features of the Universe. This approach differs from the usual scalar-tensor method and, among other things, it spares us from dealing with unnecessary discussions about frames. It also leads to a simple system of equations which is particularly suited for a numerical analysis.