Cosmic acceleration from M theory on twisted spaces
| dc.contributor.author | Neupane, I.P. | |
| dc.contributor.author | Wiltshire, D.L. | |
| dc.date.accessioned | 2014-04-01T21:11:44Z | |
| dc.date.available | 2014-04-01T21:11:44Z | |
| dc.date.issued | 2005 | en |
| dc.description | doi: 10.1103/PhysRevD.72.083509 | en |
| dc.description.abstract | In a recent paper [I. P. Neupane and D. L. Wiltshire, Phys. Lett. B 619, 201 (2005).] we have found a new class of accelerating cosmologies arising from a time-dependent compactification of classical supergravity on product spaces that include one or more geometric twists along with nontrivial curved internal spaces. With such effects, a scalar potential can have a local minimum with positive vacuum energy. The existence of such a minimum generically predicts a period of accelerated expansion in the four-dimensional Einstein conformal frame. Here we extend our knowledge of these cosmological solutions by presenting new examples and discuss the properties of the solutions in a more general setting. We also relate the known (asymptotic) solutions for multiscalar fields with exponential potentials to the accelerating solutions arising from simple (or twisted) product spaces for internal manifolds. | en |
| dc.identifier.citation | Neupane, I.P., Wiltshire, D.L. (2005) Cosmic acceleration from M theory on twisted spaces. Physical Review D, 72(8), pp. 083509 (17 pp). | en |
| dc.identifier.uri | http://hdl.handle.net/10092/9045 | |
| dc.language.iso | en | |
| dc.publisher | University of Canterbury. Physics and Astronomy | en |
| dc.relation.uri | http://link.aps.org/abstract/PRD/v72/e083509 | en |
| dc.rights.uri | https://hdl.handle.net/10092/17651 | en |
| dc.subject.anzsrc | Fields of Research::51 - Physical sciences::5101 - Astronomical sciences::510103 - Cosmology and extragalactic astronomy | en |
| dc.subject.anzsrc | Fields of Research::51 - Physical sciences::5101 - Astronomical sciences::510105 - General relativity and gravitational waves | en |
| dc.title | Cosmic acceleration from M theory on twisted spaces | en |
| dc.type | Journal Article |
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