The Generalized Green-Schwarz Mechanism for Type IIB Orientifolds with D3- and D7-Branes

Abstract

In this paper, we work out in detail the tadpole cancellation conditions as well as the generalized Green-Schwarz mechanism for type IIB orientifold compactifications with D3- and D7-branes. We find that not only the well-known D3- and D7-tadpole conditions have to be satisfied, but in general also the vanishing of the induced D5-brane charges leads to a non-trivial constraint. In fact, for the case $h_{-}^{1,1}\ne 0$ the latter condition is important for the cancellation of chiral anomalies. We also extend our analysis by including D9- as well as D5-branes and determine the rules for computing the chiral spectrum of the combined system.

33+7 pages; 2 figures; v2: references added; v3: published version

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• The Global Gauge Group Structure of F-theory Compactification with U(1)s
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