WZW Orientifolds and Finite Group Cohomology
نویسندگان
چکیده
منابع مشابه
WZW orientifolds and finite group cohomology
The simplest orientifolds of the WZW models are obtained by gauging a Z2 symmetry group generated by a combined involution of the target Lie group G and of the worldsheet. The action of the involution on the target is by a twisted inversion g 7→ (ζg)−1, where ζ is an element of the center of G. It reverses the sign of the KalbRamond torsion field H given by a bi-invariant closed 3-form on G. Th...
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The orientifolds of SU(2)/U(1) gauged WZW models are investigated. Recently, the D-branes in SU(2)/U(1) WZW models were investigated by Maldacena, Moore and Seiberg and they determined the geometry of the branes. They also constructed new types of D-branes other than so called Cardy type branes. In this paper we identify the geometry of the orientifolds and construct new types of orientifolds b...
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ژورنال
عنوان ژورنال: Communications in Mathematical Physics
سال: 2008
ISSN: 0010-3616,1432-0916
DOI: 10.1007/s00220-008-0525-2