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(Non-)BPS bound states and D-brane instantons

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We study non-perturbative effects in four-dimensional ##IMG## [http://ej.iop.org/icons/Entities/calN.gif] Script N = 1 supersymmetric orientifold compactifications due to D-brane instantons which are not invariant under the orientifold projection. We show that they can yield superpotential contribut...

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Bibliographic Details
Main Authors: Cvetič, Mirjam (Author) , Richter, Robert (Author) , Weigand, Timo (Author)
Format: Article (Journal)
Language:English
Published: 2 July 2008
In: Journal of high energy physics
Year: 2008, Issue: 7
ISSN:1029-8479
DOI:10.1088/1126-6708/2008/07/012
Online Access:Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1088/1126-6708/2008/07/012
Verlag, kostenfrei, Volltext: http://stacks.iop.org/1126-6708/2008/i=07/a=012
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Author Notes:Mirjam Cvetič, Robert Richter and Timo Weigand
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Summary:We study non-perturbative effects in four-dimensional ##IMG## [http://ej.iop.org/icons/Entities/calN.gif] Script N = 1 supersymmetric orientifold compactifications due to D-brane instantons which are not invariant under the orientifold projection. We show that they can yield superpotential contributions via a multi-instanton process at threshold. Some constituents of this configuration form bound states away from the wall of marginal stability which can decay in other regions of moduli space. A microscopic analysis reveals how contributions to the superpotential are possible when new BPS states compensate for their decay. We study this concretely for D2-brane instantons along decaying special Lagrangians in Type IIA and for D5-branes instantons carrying holomorphic bundles in Type I theory.
Item Description:Gesehen am 09.01.2018
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1088/1126-6708/2008/07/012

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