Gerardo Aldazabal
D = 4 chiral string compactifications from intersecting branes
Aldazabal, Gerardo; Franco, Sebastian; Ibanez, Luis; Rabadan, Raul; Uranga, Angel
Authors
Sebastian Franco
Luis Ibanez
Raul Rabadan
Angel Uranga
Abstract
Intersecting Dp -branes often give rise to chiral fermions living on their intersections. We study the construction of four-dimensional chiralgauge theories by considering configurations of type II D(3+n) -branes wrapped on nontrivial n -cycles on T 2n ×(R 2(3−n) /Z N ), for n=1, 2, 3. The gauge theories on the four noncompact dimensions of the brane world-volume are generically chiral and nonsupersymmetric. We analyze consistency conditions (RR tadpole cancellation) for these models, and their relation to four-dimensional anomaly cancellation. Cancellation of U(1) gauge anomalies involves a Green–Schwarz mechanism mediated by RR partners of untwisted and/or twisted moduli. This class of models is of potential phenomenological interest, and we construct explicit examples of SU(3)×SU(2)×U(1) three-generation models. The models are nonsupersymmetric, but the string scale may be lowered close to the weak scale so that the standard hierarchy problem is avoided. We also comment on the presence of scalar tachyons and possible ways to avoid the associated instabilities. We discuss the existence of (meta)stable configurations of D-branes on 3-cycles in (T 2 ) 3 , free of tachyons for certain ranges of the six-torus moduli.
Citation
Aldazabal, G., Franco, S., Ibanez, L., Rabadan, R., & Uranga, A. (2001). D = 4 chiral string compactifications from intersecting branes. Journal of Mathematical Physics, 42(7), 3103-3126. https://doi.org/10.1063/1.1376157
Journal Article Type | Article |
---|---|
Publication Date | Jul 1, 2001 |
Deposit Date | Jan 27, 2014 |
Publicly Available Date | Mar 28, 2024 |
Journal | Journal of Mathematical Physics |
Print ISSN | 0022-2488 |
Electronic ISSN | 1089-7658 |
Publisher | American Institute of Physics |
Peer Reviewed | Peer Reviewed |
Volume | 42 |
Issue | 7 |
Pages | 3103-3126 |
DOI | https://doi.org/10.1063/1.1376157 |
Keywords | Chiral symmetries, Branes, Gauge field theory, Compactification, D branes, Four dimensional string models. |
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arXiv version
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