C. S Scrucca
- Gauge and gravitational anomalies in D=4 N=1 orientifolds.
- Document type
- Working paper
- Faculty of Science (FNWI)
- Korteweg-de Vries Institute for Mathematics (KdVI)
- We analyze in detail the cancellation of U(1)-gauge and U(1)-gravitational anomalies in certain D=4 N=1 Type IIB orientifolds, from a string theory point of view. We verify the proposal that these anomalies are cancelled by a Green-Schwarz mechanism involving only twisted RR fields.By factorizing one-loop partition functions, we also get the RR couplings of D-branes and O-planes to theses fields.Twisted sectors with fixed planes participate to the inflow mechanism in a peculiar way.
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