Gauge Spinors and String Duality

Details Gauge Spinors and String Duality Gauge Spinors and String Duality

1999-10-13

arxiv.org/abs/hep-th/9910100v1

Nucl.Phys.B577:439-460,2000

Physics

High Energy Physics

High Energy Physics - Theory

36 pages

Scientific paper

10.1016/S0550-3213(00)00025-0

When the gauge groups of the two heterotic string theories are broken, over tori, to their "SO(16)x SO(16)" subgroups, the winding modes correspond to representations which are spinorial with respect to those subgroups. Globally, the two subgroups are isomorphic neither to SO(16)x SO(16) nor to each other. Any attempt to formulate the T-duality of the two theories on any manifold more complicated than the product of a circle with a Euclidean space must therefore take into account the possible non-existence of the relevant "generalised spin structure". We give here a global formulation of T-duality in this case, and discuss examples where the duality seems to be obstructed.

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