Duality Symmetries of 4d Heterotic Strings
نویسنده
چکیده
Target space duality (T duality), which interchanges Kaluza–Klein and winding-mode excitations of the compactified heterotic string, is realized as a symmetry of a world-sheet action. Axion-dilaton duality (S duality), a conjectured nonperturbative SL(2,Z) symmetry of the same theory, plays an analogous role for five-branes. We describe a soliton spectrum possessing both duality symmetries and argue that the theory has an infinite number of dual string descriptions. ⋆ Supported in part by the U.S. Dept. of Energy under Grant No. DE-FG03-92-ER40701. † [email protected] ‡ Permanent address. § [email protected] ¶ Supported in part by National Science Foundation under grant No. PHY89-04035.
منابع مشابه
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