Strong/Weak Coupling Duality from the Dual String

Details Strong/Weak Coupling Duality from the Dual String Strong/Weak Coupling Duality from the Dual String

1995-01-10

arxiv.org/abs/hep-th/9501030v2

Nucl.Phys.B442:47-63,1995

Physics

High Energy Physics

High Energy Physics - Theory

23 pages LATEX

Scientific paper

10.1016/S0550-3213(95)00070-4

On compactification to six spacetime dimensions, the fundamental heterotic string admits as a soliton a dual string whose effective worldsheet action couples to the background fields of the dual formulation of six-dimensional supergravity. On further toroidal compactification to four spacetime dimensions, the dual string acquires an $O(2,2;Z)$ target-space duality. This contains as a subgroup the axion-dilaton $SL(2,Z)$ which corresponds to a strong/weak coupling duality for the fundamental string. The dual string also provides a new non-perturbative mechanism for enhancement of the gauge symmetry.

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