Inflation on an Open Racetrack

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dc.creatorChen, Heng-Yu
dc.creatorHung, Ling-Yan
dc.creatorShiu, Gary
dc.date2009-01-02
dc.date2009-01-13
dc.date.accessioned2026-07-07T12:56:52Z
dc.date.available2026-07-07T12:56:52Z
dc.descriptionWe 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.
dc.description29 pages, 15 figures, pre-print number and references added
dc.identifierhttps://arxiv.org/abs/0901.0267
dc.identifierhttp://arxiv.org/abs/0901.0267
dc.identifierJHEP 0903:083,2009
dc.identifierdoi:10.1088/1126-6708/2009/03/083
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224732
dc.subjectHigh Energy Physics - Theory
dc.titleInflation on an Open Racetrack
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