Integers in the open string
arXiv:hep-th/9910148 · doi:10.1016/S0370-2693(99)01468-9
Abstract
We show that the of Pradisi-Sagnotti-Stanev are indeed integers, and we prove a conjecture of Borisov-Halpern-Schweigert. We indicate some of the special features which arise when the order of the modular matrix T is odd. Our arguments are general, applying to arbitrary ``parent'' RCFT assuming only that T has odd order.
arXiv comment8 pp, plain tex
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Cited by in corpus (9)
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- Frobenius-Schur Indicators, the Klein-bottle Amplitude, and the Principle of Orbifold Covariance
- Fixed Point Resolution in Extensions of Permutation Orbifolds
- Crosscap states and duality of Ising field theory in two dimensions
- Permutation Orbifolds in Conformal Field Theories and String Theory
- Bundles of chiral blocks and boundary conditions in CFT