The Non-Perturbative SO(32) Heterotic String

Details The Non-Perturbative SO(32) Heterotic String The Non-Perturbative SO(32) Heterotic String

1998-12-22

arxiv.org/abs/hep-th/9812210v1

Phys.Lett. B462 (1999) 271-276

Physics

High Energy Physics

High Energy Physics - Theory

12 Pages, Tex, Phyzzx Macro

Scientific paper

10.1016/S0370-2693(99)00802-3

The SO(32) heterotic string can be obtained from the type IIB string by gauging a discrete symmetry that acts as $(-1)^{F_L}$ on the perturbative string states and reverses the parity of the D-string. Consistency requires the presence of 32 NS 9-branes -- the S-duals of D9-branes -- which give SO(32) Chan-Paton factors to open D-strings. At finite string coupling, there are SO(32) charges tethered to the heterotic string world-sheet by open D-strings. At zero-coupling, the D-string tension becomes infinite and the SO(32) charges are pulled onto the world-sheet, and give the usual SO(32) world-sheet currents of the heterotic string.

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