dc.contributor.author | Clifton, T | en_US |
dc.contributor.author | Dunsby, PKS | en_US |
dc.date.accessioned | 2016-11-22T11:34:21Z | |
dc.date.submitted | 2016-11-07T16:33:45.097Z | |
dc.identifier.uri | http://qmro.qmul.ac.uk/xmlui/handle/123456789/17810 | |
dc.description | 10 pages, 3 figures | |
dc.description | 10 pages, 3 figures | en_US |
dc.description.abstract | We consider cosmological modelling in $f(R)$ theories of gravity, using both top-down and bottom-up constructions. The top-down models are based on Robertson-Walker geometries, and the bottom-up constructions are built by patching together sub-horizon-sized regions of perturbed Minkowski space. Our results suggest that these theories do not provide a theoretically attractive alternative to the standard general relativistic cosmology. We find that the only $f(R)$ theories that can admit an observationally viable weak-field limit have large-scale expansions that are observationally indistinguishable from the Friedmann solutions of General Relativity with $\Lambda$. Such theories do not alleviate any of the difficulties associated with $\Lambda$, and cannot produce any new behaviour in the cosmological expansion without simultaneously destroying the Newtonian approximation to gravity on small scales. | en_US |
dc.format.extent | 103528 - ? | en_US |
dc.relation.ispartof | Phys. Rev. D | en_US |
dc.rights | This is a pre-copyedited, author-produced PDF of an article accepted for publication in Physical Review D following peer review. The version of record is available http://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.103528 | |
dc.subject | gr-qc | en_US |
dc.subject | gr-qc | en_US |
dc.subject | astro-ph.CO | en_US |
dc.title | On the Emergence of Accelerating Cosmic Expansion in f(R) Theories of Gravity | en_US |
dc.type | Article | |
dc.rights.holder | © 2015 American Physical Society | |
dc.identifier.doi | 10.1103/PhysRevD.91.103528 | en_US |
pubs.author-url | http://arxiv.org/abs/1501.04004v2 | en_US |
pubs.notes | No embargo | en_US |
pubs.publisher-url | http://dx.doi.org/10.1103/PhysRevD.91.103528 | en_US |
pubs.volume | 91 | en_US |