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## “School of Physics”

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Paper   IPM / P / 9007
School of Physics
Title:   Dynamics of D3-D7 Brane Inflation in Throats
Author(s):
 1 . F . Chen 2 . H. Firouzjahi
Status:   Published
Journal: JHEP
Vol.:  11
Year:  2008
Pages:   017
Supported by:  IPM
Abstract:
Dynamics of D3-branes in models of warped D3-D7 inflationary set up is studied where perturbative α′ correction to the Kähler potential and the nonperturbative corrections to the superpotential are included. It is shown that a dS minimum can be obtained without introducing anti-branes. Some specific configurations of D7-branes embedding were studied. After stabilizing the angular directions, it is shown that the resulting D3-D7 potential of the radial position of the D3-brane is too steep to allow slow-roll inflation. Depending on D7-branes embedding and the stabilized angular directions, the mobile D3-brane can move either towards the tip of the throat or towards the D7-branes.

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