Brane Annihilations during Inflation

Details Brane Annihilations during Inflation Brane Annihilations during Inflation

2010-04-08

arxiv.org/abs/1004.1417v3

JCAP07:009, 2010

Physics

High Energy Physics

High Energy Physics - Theory

29 pages, 5 figures; v3: slightly extended explanations, conclusions unchanged

Scientific paper

10.1088/1475-7516/2010/07/009

We investigate brane inflation driven by two stacks of mobile branes in a throat. The stack closest to the bottom of the throat annihilates first with antibranes, resulting in particle production and a change of the equation of state parameter w. We calculate analytically some observable signatures of the collision; related decays are common in multi-field inflation, providing the motivation for this case study. The discontinuity in w enters the matching conditions relating perturbations in the remaining degree of freedom before and after the collision, affecting the power-spectrum of curvature perturbations. We find an oscillatory modulation of the power-spectrum for scales within the horizon at the time of the collision, and a slightly redder spectrum on super-horizon scales. We comment on implications for staggered inflation.

Affiliated with

Also associated with

No associations

Rating

Brane Annihilations during 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 Brane Annihilations during Inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Brane Annihilations during Inflation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-220194