Tachyon-free Orientifolds of Type 0B Strings in Various Dimensions

Abstract

We construct non-tachyonic, non-supersymmetric orientifolds of Type 0B strings in ten, six and four space-time dimensions. Typically, these models have unitary gauge groups with charged massless fermionic and bosonic matter fields. However, generically there remains an uncancelled dilaton tadpole.

23 pages, TeX; harvmac, references added, typos corrected

References in corpus (1)

• Non-perturbative Orientifolds

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