Published May 1, 2013 | Version v1
Journal article

Variety of cosmic acceleration models from massive F(R) bigravity

  • 1. Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602 (Japan)
  • 2. Consejo Superior de Investigaciones Científicas, ICE/CSIC-IEEC, Campus UAB, Facultat de Ciències, Torre C5-Parell-2a pl, E-08193 Bellaterra (Barcelona) Spain (Spain)

Description

We study the accelerating cosmology in massive F(R) bigravity via the reconstruction scheme. The consistent solution of the FRW equations is presented: it includes Big and Little Rip, quintessence, de Sitter and decelerating universes described by the physical g metric while the corresponding solution of the universe described by the reference f metric is also found. It is demonstrated that in general the cosmological singularities of g metric are not always manifested as cosmological singularities of the reference f metric. We give two consistent ways to describe the Big and Little Rip, quintessence, de Sitter and decelerating universes. In one of the consistent solutions, the two metrics g and f coincide with each other, which may indicate the connection with the convenient single metric background formulation. For another solution, where two metrics g and f do not coincide with each other, there always appears super-luminal mode

Availability note (English)

Available from http://dx.doi.org/10.1088/1475-7516/2013/05/020

Additional details

Publishing Information

Journal Title
Journal of Cosmology and Astroparticle Physics
Journal Volume
2013
Journal Issue
05
Journal Page Range
p. 020
ISSN
1475-7516

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45104233
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
ACCELERATION; COSMOLOGY; DE SITTER GROUP; DE SITTER SPACE; FIELD EQUATIONS; MATHEMATICAL SOLUTIONS; METRICS; NONLUMINOUS MATTER; SINGULARITY; UNIVERSE
Descriptors DEC
EQUATIONS; LIE GROUPS; MATHEMATICAL SPACE; MATTER; SPACE; SYMMETRY GROUPS