Discrete torsion in non-geometric orbifolds and their open-string descendants

Details Discrete torsion in non-geometric orbifolds and their open-string descendants Discrete torsion in non-geometric orbifolds and their open-string descendants

1999-10-28

arxiv.org/abs/hep-th/9910228v2

Nucl.Phys. B573 (2000) 314-334

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, Latex, minor typos corrected, references added, version to appear in Nuclear Physics B

Scientific paper

10.1016/S0550-3213(99)00765-8

We discuss some Z_N^L x Z_N^R orbifold compactifications of the type IIB superstring to D= 4,6 dimensions and their type I descendants. Although the Z_N^L x Z_N^R generators act asymmetrically on the chiral string modes, they result into left-right symmetric models that admit sensible unorientable reductions. We carefully work out the phases that appear in the modular transformations of the chiral amplitudes and identify the possibility of introducing discrete torsion. We propose a simplifying ansatz for the construction of the open-string descendants in which the transverse-channel Klein-bottle, annulus and Moebius-strip amplitudes are numerically identical in the proper parametrization of the world-sheet. A simple variant of the ansatz for the Z_2^L x Z_2^R orbifold gives rise to models with supersymmetry breaking in the open-string sector.

Affiliated with

Also associated with

No associations

Rating

Discrete torsion in non-geometric orbifolds and their open-string descendants does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Discrete torsion in non-geometric orbifolds and their open-string descendants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discrete torsion in non-geometric orbifolds and their open-string descendants will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-609082