Duality twists, orbifolds, and fluxes

Dabholkar, Atish ; Hull, Chris (2003) Duality twists, orbifolds, and fluxes Journal of High Energy Physics, 2003 (9). No pp. given. ISSN 1126-6708

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Official URL: http://iopscience.iop.org/1126-6708/2003/09/054

Related URL: http://dx.doi.org/10.1088/1126-6708/2003/09/054

Abstract

We investigate compactifications with duality twists and their relation to orbifolds and compactifications with fluxes. Inequivalent compactifications are classified by conjugacy classes of the U-duality group and result in gauged supergravities in lower dimensions with nontrivial Scherk-Schwarz potentials on the moduli space. For certain twists, this mechanism is equivalent to introducing internal fluxes but is more general and can be used to stabilize some of the moduli. We show that the potential has stable minima with zero energy precisely at the fixed points of the twist group. In string theory, when the twist belongs to the T-duality group, the theory at the minimum has an exact CFT description as an orbifold. We also discuss more general twists by nonperturbative U-duality transformations.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics Publishing.
Keywords:Superstring Vacua; String Duality
ID Code:8142
Deposited On:26 Oct 2010 11:27
Last Modified:30 May 2011 10:34

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