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D = 4 chiral string compactifications from intersecting branes

Aldazabal, Gerardo; Franco, Sebastian; Ibanez, Luis; Rabadan, Raul; Uranga, Angel

Authors

Gerardo Aldazabal

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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