Non-perturbative orientifold transitions at the conifold
After orientifold projection, the conifold singularity in hypermultiplet moduli space of Calabi-Yau compactifications cannot be avoided by geometric deformations. We study the non-perturbative fate of this singularity in a local model involving O6-planes and D6-branes wrapping the deformed conifold...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
10 October 2005
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| In: |
Journal of high energy physics
Year: 2005, Issue: 10 |
| ISSN: | 1029-8479 |
| DOI: | 10.1088/1126-6708/2005/10/026 |
| Online Access: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1088/1126-6708/2005/10/026 Verlag, kostenfrei, Volltext: http://stacks.iop.org/1126-6708/2005/i=10/a=026 
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| Author Notes: | Kentaro Hori, Kazuo Hosomichi and David C. Page (Department of Physics, University of Toronto, Toronto, Ontario, Canada), Raúl Rabadan and Johannes Walcher (School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey, U.S.A.) |
| Summary: | After orientifold projection, the conifold singularity in hypermultiplet moduli space of Calabi-Yau compactifications cannot be avoided by geometric deformations. We study the non-perturbative fate of this singularity in a local model involving O6-planes and D6-branes wrapping the deformed conifold in type-IIA string theory. We classify possible A-type orientifolds of the deformed conifold and find that they cannot all be continued to the small resolution. When passing through the singularity on the deformed side, the O-plane charge generally jumps by the class of the vanishing cycle. To decide which classical configurations are dynamically connected, we construct the quantum moduli space by lifting the orientifold to M-theory as well as by looking at the superpotential. We find a rich pattern of smooth and phase transitions depending on the total sixbrane charge. Non-BPS states from branes wrapped on non-supersymmetric bolts are responsible for a phase transition. We also clarify the nature of a ##IMG## [http://ej.iop.org/icons/Entities/BbbZ.gif] Bbb Z 2 valued D0-brane charge in the 6-brane background. Along the way, we obtain a new metric of G 2 holonomy corresponding to an O6-plane on the three sphere of the deformed conifold. |
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| Item Description: | Gesehen am 21.02.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1029-8479 |
| DOI: | 10.1088/1126-6708/2005/10/026 |