Mena, O;
Santiago, J;
Weller, J;
(2006)
Constraining inverse-curvature gravity with supernovae.
PHYS REV LETT
, 96
(4)
, Article 041103. 10.1103/PhysRevLett.96.041103.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | Constraining inverse-curvature gravity with supernovae |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.96.041103 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.96.041103 |
| Language: | English |
| Additional information: | © 2006 The American Physical Society |
| Keywords: | HUBBLE-SPACE-TELESCOPE, DARK ENERGY, COSMOLOGICAL CONSTANT, NEWTONIAN LIMIT, GALAXY CLUSTERS, UNIVERSE, POWERS, MODELS, SCALAR |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/58115 |
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