ar X iv : h ep - t h / 98 04 20 8 v 1 3 0 A pr 1 99 8 LECTURES ON ORIENTIFOLDS AND DUALITY
نویسنده
چکیده
These lecture notes are intended as a pedagogical introduction to orientifolds. Aspects of orbifolds and F-theory are also discussed in brief to provide the necessary background. The emphasis is on the applications of these constructions to duality. The approach is based on simple examples that can be easily worked out in detail but which, at the same time, illustrate the main ingredients of the general procedure.
منابع مشابه
ar X iv : h ep - t h / 96 04 12 9 v 1 2 2 A pr 1 99 6 NSF - ITP - 96 - 16 hep - th / 9604129 K 3 Orientifolds Eric
We study string theory propagating on R6×K3 by constructing orientifolds of Type IIB string theory compactified on the T /ZN orbifold limits of the K3 surface. This generalises the Z2 case studied previously. The orientifold models studied may be divided into two broad categories, sometimes related by T–duality. Models in category A require either both D5– and D9– branes, or only D9–branes, for...
متن کاملar X iv : h ep - t h / 99 08 01 7 v 1 3 A ug 1 99 9 HUE - 99 / 1 July 1999 D = 4 , N = 1 , Type IIA Orientifolds
We study D = 4, N = 1, type IIA orientifold with orbifold group ZN and ZN × ZM . We calculate one-loop vacuum amplitudes for Klein bottle, cylinder and Möbius strip and extract the tadpole divergences. We find that the tadpole cancellation conditions thus obtained are satisfied by the Z4, Z8, Z ′ 8, Z ′ 12 orientifolds while there is no solution for Z3, Z7, Z6, Z ′ 6, Z12. The Z4 × Z4 type IIA ...
متن کاملar X iv : h ep - t h / 99 08 01 7 v 2 2 O ct 1 99 9 HUE - 99 / 1 July 1999 D = 4 , N = 1 , Type IIA Orientifolds
We study D = 4, N = 1, type IIA orientifold with orbifold group ZN and ZN × ZM . We calculate one-loop vacuum amplitudes for Klein bottle, cylinder and Möbius strip and extract the tadpole divergences. We find that the tadpole cancellation conditions thus obtained are satisfied by the Z4, Z8, Z ′ 8, Z ′ 12 orientifolds while there is no solution for Z3, Z7, Z6, Z ′ 6, Z12. The Z4 × Z4 type IIA ...
متن کاملar X iv : h ep - t h / 96 04 12 9 v 4 1 1 Ju l 1 99 6 NSF - ITP - 96 - 16 hep - th / 9604129 K 3 Orientifolds Eric
We study string theory propagating on R6×K3 by constructing orientifolds of Type IIB string theory compactified on the T /ZN orbifold limits of the K3 surface. This generalises the Z2 case studied previously. The orientifold models studied may be divided into two broad categories, sometimes related by T–duality. Models in category A require either both D5– and D9–branes, or only D9–branes, for ...
متن کاملSuperstring Orientifolds with Torsion: O5 Orientifolds of Torus Fibrations and their Massless Spectra
Using a “Superstrings with Torsion” type description, we study a class of IIB orientifolds in which spacefilling O5 planes and D5 branes wrap the T 2 fiber in a warped modification of the product of 4D Minkowski space and a T 2 fibration. For the case that the base is T , we provide examples that preserve 4D N = 1, 2, and 3 supersymmetry, both with internal RR flux, and with a combination of in...
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تاریخ انتشار 2008