Tensors from K3 orientifolds

Journal Article · Thu May 01 00:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.55.6423· OSTI ID:503763

Polchinski, J ^[1]

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1. Institute for Theoretical Physics, University of California, Santa Barbara, California 93106-4030 (United States)

Recently Gimon and Johnson and Dabholkar and Park have constructed type I theories on K3 orbifolds. The spectra differ from that of type I on a smooth K3, having extra tensors. We show that the orbifold theories cannot be blown up to smooth K3{close_quote}s, but rather {bold Z}{sub 2} orbifold singularities always remain. Douglas{close_quote}s recent proposal to use D-branes as probes is useful in understanding the geometry. The {bold Z}{sub 2} singularities are of a new type, with a different orientifold projection from those previously considered. We also find a new world-sheet consistency condition that must be satisfied by orientifold models. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 503763
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 10 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CONFORMAL INVARIANCE
DUALITY
GEOMETRY
SINGULARITY
SOLITONS
SPECTRA
STRING MODELS
SUPERSYMMETRY
TENSORS