Published September 14, 2007
| Published
Journal Article
Open
Nonlocal Cosmology
- Creators
-
Deser, S.
- Woodard, R. P.
Abstract
We explore nonlocally modified models of gravity, inspired by quantum loop corrections, as a mechanism for explaining current cosmic acceleration. These theories enjoy two major advantages: they allow a delayed response to cosmic events, here the transition from radiation to matter dominance, and they avoid the usual level of fine-tuning; instead, emulating Dirac's dictum, the required large numbers come from the large time scales involved. Their solar system effects are safely negligible, and they may even prove useful to the black hole information problem.
Additional Information
© 2007 The American Physical Society. (Received 15 June 2007; revised 18 July 2007; published 14 September 2007) This work was partially supported by National Science Foundation Grants Nos. PHY04-01667, PHY-0244714, and PHY-0653085, and by the Institute for Fundamental Theory at the University of Florida.Attached Files
Published - DESprl07.pdf
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DESprl07.pdf
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Additional details
- Eprint ID
- 8780
- Resolver ID
- CaltechAUTHORS:DESprl07
- PHY04-01667
- NSF
- PHY-0244714
- NSF
- PHY-0653085
- NSF
- University of Florida
- Created
-
2007-09-15Created from EPrint's datestamp field
- Updated
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2023-06-01Created from EPrint's last_modified field