Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-06-05
JHEP 0207:026,2002
Physics
High Energy Physics
High Energy Physics - Theory
82 pages, harvmac, 5 figures. v2: references added. v3: T^6 orientifold corrected, JHEP version
Scientific paper
10.1088/1126-6708/2002/07/026
We investigate orientifolds of type II string theory on K3 and Calabi-Yau 3-folds with intersecting D-branes wrapping special Lagrangian cycles. We determine quite generically the chiral massless spectrum in terms of topological invariants and discuss both orbifold examples and algebraic realizations in detail. Intriguingly, the developed techniques provide an elegant way to figure out the chiral sector of orientifold models without computing any explicit string partition function. As a new example we derive a non-supersymmetric Standard-like Model from an orientifold of type IIA on the quintic Calabi-Yau 3-fold with wrapped D6-branes. In the case of supersymmetric intersecting brane models on Calabi-Yau manifolds we discuss the D-term and F-term potentials, the effective gauge couplings and the Green-Schwarz mechanism. The mirror symmetric formulation of this construction is provided within type IIB theory. We finally include a short discussion about the lift of these models from type IIB on K3 to F-theory and from type IIA on Calabi-Yau 3-folds to M-theory on G_2 manifolds.
Blumenhagen Ralph
Braun Volker
Kors Boris
Lust Dieter
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