Astrophysical constraints on extended gravity models

2015/03/31 by Gaetano Lambiase, Mairi Sakellariadou, Antonio Stabile +1 · 1 citation
Physics and Astronomy · #gr-qc #astro-ph.CO #hep-th

paper · pdf · doi:10.1088/1475-7516/2015/07/003

published as JCAP 07 (2015) 003 · 22 pages; minor changes to match published version

arxiv created 2015/07/09 · arxiv updated 2015/07/10

Abstract

We investigate the propagation of gravitational waves in the context of fourth order gravity nonminimally coupled to a massive scalar field. Using the damping of the orbital period of coalescing stellar binary systems, we impose constraints on the free parameters of extended gravity models. In particular, we find that the variation of the orbital period is a function of three mass scales which depend on the free parameters of the model under consideration; we can constrain these mass scales from current observational data.

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• Casimir effect in Extended Theories of Gravity

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