Type IIB orientifolds with NS-NS antisymmetric tensor backgrounds

Journal Article · Thu Oct 01 04:00:00 EDT 1998 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.58.086001· OSTI ID:662313

Kakushadze, Z ^[1]; Shiu, G; Tye, S H ^[2]

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1. Lyman Laboratory of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States)
2. Newman Laboratory of Nuclear Studies, Cornell University, Ithaca, New York 14853 (United States)

We consider six dimensional N=1 space-time supersymmetric type IIB orientifolds with a nonzero untwisted NS-NS sector B field. The B field is quantized due to the requirement that the type IIB spectrum be left-right symmetric. The presence of the B field results in rank reduction of both 99 and 55 open string sector gauge groups. We point out that in some of the models with a nonzero B field there are extra tensor multiplets in the {bold Z}{sub 2} twisted closed string sector, and we explain their origin in a simple example. Also, the 59 open string sector states come with a multiplicity that depends on the B field. These two facts are in accord with anomaly cancellation requirements. We point out relations between various orientifolds with and without the B field, and also discuss the F-theory duals of these models. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 662313
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 8 Vol. 58; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COMPACTIFICATION
MULTIPLICITY
SPACE-TIME
STRING MODELS
SUPERSYMMETRY
TENSORS