Bbb ZN × Bbb ZM orientifolds with and without discrete torsion
نویسندگان
چکیده
منابع مشابه
ZN × ZM orientifolds with and without discrete torsion
We discuss compact four-dimensional ZN × ZM type IIB orientifolds. We take a systematic approach to classify the possible models and construct them explicitely. The supersymmetric orientifolds of this type have already been constructed some time ago. We find that there exist several consistent orientifolds for each of the discrete groups Z2 × Z2, Z2 × Z4, Z4 × Z4, Z2 × Z6, Z2 × Z ′ 6 and Z6 × Z...
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In this short note we discuss discrete torsion in orientifolds. In particular, we apply the physical understanding of discrete torsion worked out several years ago, as group actions on B fields, to the case of orientifolds, and recover some old results of Braun and Stefanski concerning group cohomology and twisted equivariant K theory. We also derive new results including phase factors for nono...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2000
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2000/10/049