Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-01-02
JHEP 0903:083,2009
Physics
High Energy Physics
High Energy Physics - Theory
29 pages, 15 figures, pre-print number and references added
Scientific paper
10.1088/1126-6708/2009/03/083
We present a variant of warped D-brane inflation by incorporating multiple sets of holomorphically-embedded D7-branes involved in moduli stabilization with extent into a warped throat. The resultant D3-brane motion depends on the D7-brane configuration and the relative position of the D3-brane in these backgrounds. The non-perturbative moduli stabilization superpotential takes the racetrack form, but the additional D3-brane open string moduli dependence provides more flexibilities in model building. For concreteness, we consider D3-brane motion in the warped deformed conifold with the presence of multiple D7-branes, and derive the scalar potential valid for the entire throat. By explicit tuning of the microphysical parameters, we obtain inflationary trajectories near an inflection point for various D7-brane configurations. Moreover, the open racetrack potential admits approximate Minkowski vacua before uplifting. We demonstrate with a concrete D-brane inflation model where the Hubble scale during inflation can exceed the gravitino mass. Finally, the multiple sets of D7-branes present in this open racetrack setup also provides a mechanism to stabilize the D3-brane to metastable vacua in the intermediate region of the warped throat.
Chen Heng-Yu
Hung Ling-Yan
Shiu Gary
No associations
LandOfFree
Inflation on an Open Racetrack 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 Inflation on an Open Racetrack, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inflation on an Open Racetrack will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-381023