A Note on Orientifolds and Dualities of Type 0B String Theory
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We generalize the construction of four dimensional non-tachyonic orientifolds of type 0B string theory to non-supersymmetric backgrounds. We construct a four dimensional model containing self-dual D3 and D9-branes and leading to a chiral anomaly-free massless spectrum. Moreover, we discuss a further tachyon-free six dimensional model with only D5 branes. Eventually, we speculate about strong coupling dual models of the ten-dimensional orientifolds of type 0B.
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Cited by 7 Pith papers
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M-theory on S1 vee S1 with quotients and type I' mechanisms reproduces the light spectra and gauge groups of 10D heterotic theories, with evidence for junctions among them.
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