Consistency conditions for orientifolds and D-manifolds
- Department of Physics, University of California Santa Barbara, Santa Barbara, California 93106 (United States)
- Institute for Theoretical Physics, University of California, Santa Barbara, California 93106-4030 (United States)
We study superstrings with orientifold projections and with generalized open string boundary conditions (D branes). We find two types of consistency condition, one related to the algebra of Chan-Paton factors and the other to cancellation of divergences. One consequence is that the Dirichlet five branes of the type I theory carry a symplectic gauge group, as required by string duality. As another application we study the type I theory on a {ital K}3 {ital Z}{sub 2} orbifold, finding a family of consistent theories with various unitary and symplectic subgroups of U(16){times}U(16). We argue that the {ital K}3 orbifold with spin connection embedded in gauge connection corresponds to an interacting conformal field theory in the type I theory. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 286243
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 2 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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