Please use this identifier to cite or link to this item:
|Title:||A no-go theorem for accelerating cosmologies from M-theory compactifications||Authors:||Teo, E.||Issue Date:||10-Mar-2005||Citation:||Teo, E. (2005-03-10). A no-go theorem for accelerating cosmologies from M-theory compactifications. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 609 (3-4) : 181-186. ScholarBank@NUS Repository. https://doi.org/10.1016/j.physletb.2005.01.064||Abstract:||It is known that four-dimensional cosmologies exhibiting transient phases of acceleration can be obtained by compactifications of low-energy effective string or M-theory on time-varying manifolds. In the four-dimensional theory, the acceleration can be attributed to a quintessential scalar field with a positive effective potential. Recently, Townsend has conjectured that the potentials obtained by such compactifications cannot give rise to late-time accelerating universes which possess future event horizons. Such a 'no-go' result would be desirable, since current string or M-theory seems unable to provide an adequate description of space-times with future event horizons. In this Letter, we provide a proof of this conjecture for a class of warped compactifications with a single scalar modulus parametrising the volume of the compactification manifold. © 2005 Elsevier B.V. All rights reserved.||Source Title:||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/95654||ISSN:||03702693||DOI:||10.1016/j.physletb.2005.01.064|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jan 13, 2021
WEB OF SCIENCETM
checked on Jan 6, 2021
checked on Jan 9, 2021
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.