Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Observational constraints on Visser's cosmological model

Full text
Alves, M. E. S. [1] ; Carvalho, F. C. [1, 2] ; de Araujo, J. C. N. [1] ; Miranda, O. D. [1] ; Wuensche, C. A. [1] ; Santos, E. M. [3]
Total Authors: 6
[1] Inst Nacl Pesquisas Espaciais, Div Astrofis, BR-12227010 Sao Jose Dos Campos, SP - Brazil
[2] UERN, BR-59610210 Mossoro, RN - Brazil
[3] Univ Fed Rio de Janeiro, BR-21945970 Rio De Janeiro - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Physical Review D; v. 82, n. 2 JUL 13 2010.
Web of Science Citations: 7

Theories of gravity for which gravitons can be treated as massive particles have presently been studied as realistic modifications of general relativity, and can be tested with cosmological observations. In this work, we study the ability of a recently proposed theory with massive gravitons, the so-called Visser theory, to explain the measurements of luminosity distance from the Union2 compilation, the most recent Type-Ia Supernovae (SNe Ia) data set, adopting the current ratio of the total density of nonrelativistic matter to the critical density (Omega(m)) as a free parameter. We also combine the SNe Ia data with constraints from baryon acoustic oscillations (BAO) and cosmic microwave background (CMB) measurements. We find that, for the allowed interval of values for Omega(m), a model based on Visser's theory can produce an accelerated expansion period without any dark energy component, but the combined analysis (SNe Ia + BAO + CMB) shows that the model is disfavored when compared with the Lambda CDM model. (AU)

FAPESP's process: 07/08560-4 - f(R) gravity theories and the cosmic microwave background radiation
Grantee:Fabio Cabral Carvalho
Support type: Scholarships in Brazil - Post-Doctorate