Toroidal compactification without vector structure
نویسندگان
چکیده
منابع مشابه
Toroidal Compactification without Vector Structure
Many important ideas about string duality that appear in conventional T compactification have analogs for T compactification without vector structure. We analyze some of these issues and show, in particular, how orientifold planes associated with Sp(n) gauge groups can arise from T -duality and how they can be interpreted in F -theory. We also, in an appendix, resolve a longstanding puzzle conc...
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It was shown by A. Connes, M. Douglas and A. Schwarz that noncommutative tori arise naturally in consideration of toroidal compactifications of M(atrix) theory. A similar analysis of toroidal Z2 orbifolds leads to the algebra Bθ that can be defined as a crossed product of noncommutative torus and the group Z2 . Our paper is devoted to the study of projective modules over Bθ ( Z2-equivariant pro...
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We revisit type I compactifications with a Spin(32)/Z2 gauge bundle that admits no vector structure. We elucidate the relation of this Z2 obstruction to discrete B-field flux and to ’t Hooft flux and clarify some subtleties in the T-duality transformation to type IIA intersecting D-brane models. We reexamine the earliest 3-generation GUT model on magnetized D-branes and show its consistency whe...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 1998
ISSN: 1029-8479
DOI: 10.1088/1126-6708/1998/02/006