Lancaster EPrints

Generating the curvature perturbation at the end of inflation in string theory

Lyth, D. H. and Riotto, A. (2006) Generating the curvature perturbation at the end of inflation in string theory. Physical Review Letters, 97 (121301). ISSN 1079-7114

Full text not available from this repository.

Abstract

In brane inflationary scenarios, the cosmological perturbations are supposed to originate from the vacuum fluctuations of the inflaton field corresponding to the position of the brane. We show that a significant, and possibly dominant, contribution to the curvature perturbation is generated at the end of inflation through the vacuum fluctuations of fields, other than the inflaton, which are light during the inflationary trajectory and become heavy at the brane-antibrane annihilation. These fields appear generically in string compactifications where the background geometry has exact or approximate isometries and parametrize the internal angular directions of the brane.

Item Type: Article
Journal or Publication Title: Physical Review Letters
Subjects: UNSPECIFIED
Departments: Faculty of Science and Technology > Physics
ID Code: 9624
Deposited By: Mr Michael Dunne
Deposited On: 17 Jun 2008 11:23
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:40
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/9624

Actions (login required)

View Item