TY  - JOUR
UR  - http://dx.doi.org/10.1103/PhysRevLett.96.041103
PB  - AMERICAN PHYSICAL SOC
AV  - public
Y1  - 2006/02/03/
A1  - Mena, O
A1  - Santiago, J
A1  - Weller, J
SN  - 0031-9007
VL  - 96
JF  - PHYS REV LETT
KW  - HUBBLE-SPACE-TELESCOPE
KW  -  DARK ENERGY
KW  -  COSMOLOGICAL CONSTANT
KW  -  NEWTONIAN LIMIT
KW  -  GALAXY CLUSTERS
KW  -  UNIVERSE
KW  -  POWERS
KW  -  MODELS
KW  -  SCALAR
ID  - discovery58115
IS  - 4
TI  - Constraining inverse-curvature gravity with supernovae
N1  - © 2006 The American Physical Society
N2  - We show that models of generalized modified gravity, with inverse powers of the curvature, can explain the current accelerated expansion of the Universe without resorting to dark energy and without conflicting with solar system experiments. We have solved the Friedmann equations for the full dynamical range of the evolution of the Universe and performed a detailed analysis of supernovae data in the context of such models that results in an excellent fit. If we further include constraints on the current expansion of the Universe and on its age, we obtain that the matter content of the Universe is 0.07 <=omega(m)<= 0.21 (95% C.L.). Hence the inverse-curvature gravity models considered cannot explain the dynamics of the Universe just with a baryonic matter component.
ER  -