Inflation from D3-brane motion in the background of D5-branes

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dc.creatorPanda, Sudhakar
dc.creatorSami, M.
dc.creatorTsujikawa, Shinji
dc.creatorWard, John
dc.date2006-01-06
dc.date2006-04-05
dc.date.accessioned2026-07-07T10:45:38Z
dc.date.available2026-07-07T10:45:38Z
dc.descriptionWe study inflation arising from the motion of a BPS D3-brane in the background of a stack of k parallel D5-branes. There are two scalar fields in this set up-- (i) the radion field R, a real scalar field, and (ii) a complex tachyonic scalar field chi living on the world volume of the open string stretched between the D3 and D5 branes. We find that inflation is realized by the potential of the radion field, which satisfies observational constraints coming from the Cosmic Microwave Background. After the radion becomes of order the string length scale l_s, the dynamics is governed by the potential of the complex scalar field. Since this field has a standard kinematic term, reheating can be successfully realized by the mechanism of tachyonic preheating with spontaneous symmetry breaking.
dc.description10 pages, 4 figures. Minor clarifications and references added. Version to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/hep-th/0601037
dc.identifierhttp://arxiv.org/abs/hep-th/0601037
dc.identifierPhys.Rev.D73:083512,2006
dc.identifierdoi:10.1103/PhysRevD.73.083512
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182973
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titleInflation from D3-brane motion in the background of D5-branes
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