Orbifolds of M-theory

Details Orbifolds of M-theory Orbifolds of M-theory

1995-12-24

arxiv.org/abs/hep-th/9512196v3

Nucl.Phys. B465 (1996) 399-412

Physics

High Energy Physics

High Energy Physics - Theory

Uses harvmac, 16 pages (b) or 20 pages (l). Minor changes, final version to appear in NPB

Scientific paper

10.1016/0550-3213(96)00070-3

We study Z2-orbifolds of 11-dimensional M-theory on tori of various dimensions. The most interesting model (besides the known S1/Z2 case) corresponds to T5/Z2, for which we argue that the resulting six-dimensional theory is equivalent to the type IIB string compactified on K3. Gravitational anomaly cancellation plays a crucial role in determining what states appear in the twisted sector. Most of the other models appear to break spacetime supersymmetry. We observe that M-theory tends to produce chiral compactifications on orbifolds, and that our results may provide an insight into the mechanism by which twisted-sector states arise in this hypothetical theory.

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