A class of non-supersymmetric orientifolds
Abstract
We study type IIB orientifolds on T2d/ZN with supersymmetry broken by the compactification. We determine tadpole cancellation conditions including anti-branes and considering different actions for the parity Omega. Using these conditions we then obtain the spectrum of tachyons and massless states. Various examples with N even correspond to type 0B orientifolds.
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