2007/10/31 by Marek Szydlowski, Marek Szydłowski, Orest Hrycyna +1
Physics and Astronomy · #Advanced Differential Geometry Research #Astrophysics #Baryon acoustic oscillations #Black Holes and Theoretical Physics #Cosmic background radiation #Cosmic microwave background #Cosmological constant #Cosmology #Cosmology and Gravitation Theories #Coupling (piping) #Coupling constant #Dark energy #Mathematical physics #Oscillation (cell signaling) #Physics #Quantum electrodynamics #Quantum mechanics #Quintessence #Scalar field #Supernova #Theoretical physics #astro-ph #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.77.027302
published as Phys.Rev.D77:027302,2008 · revtex4, 11 pages, 3 figs; (v2) 4 pages, shortened version, title changed, comments added on the Equivalence Principle; (v3) published version
openalex publication_date 2008/01/25 · arxiv created 2008/02/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In the paper we investigate observational constraints on coupling to gravity constant parameter \ensuremathξ using distant supernovae SNIa data, baryon oscillation peak (BOP), the cosmic microwave background radiation (CMBR) shift parameter, and the H(z) data set. We estimate the value of this parameter to constrain the extended quintessence models with nonminimally coupled to gravity phantom scalar field. The combined analysis of observational data favors a value of \ensuremathξ which lies in close neighborhood of the conformal coupling. While our estimations are model dependent they give rise to an indirect bound on the equivalence principle.