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Discrete torsion, covering groups and quiver diagrams

Feng, B., Hanany, A., He, Y. and Prezas, N. (2001). Discrete torsion, covering groups and quiver diagrams. Journal of High Energy Physics, 2001(037), doi: 10.1088/1126-6708/2001/04/037

Abstract

Without recourse to the sophisticated machinery of twisted group algebras, projective character tables and explicit values of 2-cocycles, we here present a simple algorithm to study the gauge theory data of D-brane probes on a generic orbifold G with discrete torsion turned on. We show in particular that the gauge theory can be obtained with the knowledge of no more than the ordinary character tables of G and its covering group G*. Subsequently we present the quiver diagrams of certain illustrative examples of SU(3)-orbifolds which have non-trivial Schur Multipliers. The paper serves as a companion to our earlier work (arXiv:hep-th/0010023) and aims to initiate a systematic and computationally convenient study of discrete torsion.

Publication Type: Article
Additional Information: The original publication is available at http://iopscience.iop.org/1126-6708/2001/04/037/ archiveprefix: arXiv primaryclass: hep-th
Publisher Keywords: discrete and finite symmetries, Brane dynamics in gauge theories, D-branes
Subjects: Q Science > QC Physics
Departments: School of Mathematics, Computer Science & Engineering > Mathematics
URI: http://openaccess.city.ac.uk/id/eprint/825
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