BPS branes in discrete torsion orbifolds

Abstract

We investigate D-branes in a Z_3xZ_3 orbifold with discrete torsion. For this class of orbifolds the only known objects which couple to twisted RR potentials have been non-BPS branes. By using more general gluing conditions we construct here a D-brane which is BPS and couples to RR potentials in the twisted and in the untwisted sectors.

20 pages, LaTeX

References in corpus (4)

• Permutation Branes
• Generalised discrete torsion and mirror symmetry for G_2 manifolds
• D-branes in an asymmetric orbifold
• N=2 Superconformal boundary states for free bosons and fermions

Cited by in corpus (1)

• Fractional Branes in Non-compact Type IIA Orientifolds