Cosmic Acceleration and the String Coupling

Details Cosmic Acceleration and the String Coupling Cosmic Acceleration and the String Coupling

2004-12-20

arxiv.org/abs/hep-th/0412240v1

Phys.Lett.B619:17-25,2005

Physics

High Energy Physics

High Energy Physics - Theory

16 pages

Scientific paper

10.1016/j.physletb.2005.05.047

In the context of a cosmological string model describing the propagation of strings in a time-dependent Robertson-Walker background space-time, we show that the asymptotic acceleration of the Universe can be identified with the square of the string coupling. This allows for a direct measurement of the ten-dimensional string coupling using cosmological data. We conjecture that this is a generic feature of a class of non-critical string models that approach asymptotically a conformal (critical) sigma model whose target space is a four-dimensional space-time with a dilaton background that is linear in sigma-model time. The relation between the cosmic acceleration and the string coupling does not apply in critical strings with constant dilaton fields in four dimensions.

Affiliated with

Also associated with

No associations

Rating

Cosmic Acceleration and the String Coupling does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cosmic Acceleration and the String Coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmic Acceleration and the String Coupling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-577079