(Non-)BPS bound states and D-brane instantons
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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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2 July 2008
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| In: |
Journal of high energy physics
Year: 2008, Heft: 7 |
| ISSN: | 1029-8479 |
| DOI: | 10.1088/1126-6708/2008/07/012 |
| Online-Zugang: | 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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| Verfasserangaben: | Mirjam Cvetič, Robert Richter and Timo Weigand |
| Zusammenfassung: | 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. |
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| Beschreibung: | Gesehen am 09.01.2018 |
| Beschreibung: | Online Resource |
| ISSN: | 1029-8479 |
| DOI: | 10.1088/1126-6708/2008/07/012 |