Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-02-04
JCAP0805:016,2008
Physics
High Energy Physics
High Energy Physics - Theory
18 pages, uses iopart.sty; v2: added references, version as published in JCAP
Scientific paper
10.1088/1475-7516/2008/05/016
A class of non-canonical inflationary models is identified, where the leading-order contribution to the non-Gaussianity of the curvature perturbation is determined by the sound speed of the fluctuations in the inflaton field. Included in this class of models is the effective action for multiple coincident branes in the finite n limit. The action for this configuration is determined using a powerful iterative technique, based upon the fundamental representation of SU(2). In principle the upper bounds on the tensor-scalar ratio that arise in the standard, single-brane DBI inflationary scenario can be relaxed in such multi-brane configurations if a large and detectable non-Gaussianity is generated. Moreover models with a small number of coincident branes could generate a gravitational wave background that will be observable to future experiments.
Huston Ian
Lidsey James E.
Thomas Steven
Ward John
No associations
LandOfFree
Gravitational Wave Constraints on Multi-Brane Inflation 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 Gravitational Wave Constraints on Multi-Brane Inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational Wave Constraints on Multi-Brane Inflation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-237239