TY - JOUR
T1 - Background cosmological dynamics in f(R) gravity and observational constraints
AU - Ali, Amna
AU - Gannouji, Radouane
AU - Sami, M.
AU - Sen, Anjan A.
PY - 2010/5/13
Y1 - 2010/5/13
N2 - In this paper, we carry out a study of viable cosmological models in f(R) gravity at the background level. We use observable parameters like Ω and γ to form an autonomous system of equations and show that the models under consideration exhibit two different regimes in their time evolution, namely, a phantom phase followed by a quintessencelike behavior. We employ state finder parameters to emphasize a characteristic discriminative signature of these models.
AB - In this paper, we carry out a study of viable cosmological models in f(R) gravity at the background level. We use observable parameters like Ω and γ to form an autonomous system of equations and show that the models under consideration exhibit two different regimes in their time evolution, namely, a phantom phase followed by a quintessencelike behavior. We employ state finder parameters to emphasize a characteristic discriminative signature of these models.
UR - http://www.scopus.com/inward/record.url?scp=77954285148&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.81.104029
DO - 10.1103/PhysRevD.81.104029
M3 - Article
AN - SCOPUS:77954285148
SN - 1550-7998
VL - 81
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 10
M1 - 104029
ER -