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String universality in six dimensions

Author(s)
Kumar, Vijay; Taylor, Washington
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Abstract
In six dimensions, cancellation of gauge, gravitational, and mixed anomalies strongly constrains the set of quantum field theories, which can be coupled consistently to gravity. We show that for some classes of six-dimensional (6D) supersymmetric gauge theories coupled to gravity, the anomaly cancellation conditions are equivalent to tadpole cancellation and other constraints on the matter content of heterotic/type I compactifications on K3. In these cases, all consistent 6D supergravity theories have a realization in string theory. We find one example that may arise from a novel string compactification, and we identify a new infinite family of models satisfying anomaly factorization. We find, however, that this infinite family of models, as well as other infinite families of models previously identified by Schwarz are pathological. We suggest that it may be feasible to demonstrate that there is a string theoretic realization of all consistent 6D supergravity theories which have Lagrangian descriptions with arbitrary gauge and matter content. We attempt to frame this hypothesis of string universality as a concrete conjecture.
Description
http://lanl.arXiv.org/abs/0906.0987
Date issued
2011-04
URI
http://hdl.handle.net/1721.1/76687
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Advances in Theoretical and Mathematical Physics
Publisher
International Press
Citation
Kumar, Vijay and Washington Taylor. "String universality in six dimensions." Advances in Theoretical and Mathematical Physics 15.2 (2011): 325-353. Web.
Version: Author's final manuscript
Other identifiers
arXiv:0906.0987v4
MIT-CTP-4046
ISSN
1095-0761
1095-0753

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