Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1999-08-26
Phys.Lett.B466:144-152,1999
Physics
High Energy Physics
High Energy Physics - Theory
LaTeX, 14 pages; v2:one reference added and extended discussion of the BPS mass formula; v3: minor changes, to appear in PLB
Scientific paper
10.1016/S0370-2693(99)01114-4
The connection between IIA superstring theory compactified on a circle of radius R and IIB theory compactified on a circle of radius 1/R is reexamined from the perspective of N=2, D=9 space-time supersymmetry. We argue that the consistency of IIA/B duality requires the BPS states corresponding to momentum and winding of either of the type-II superstrings to transform as inequivalent supermultiplets. We show that this is indeed the case for any finite compactification radius, thus providing a nontrivial confirmation of IIA/B duality. From the point of view of N=2, D=9 supergravity, one is naturally led to an SL(2,Z) invariant field theory that encompasses both the M-theory torus and the Kaluza-Klein states of the IIB theory.
Abou-Zeid Mohab
Lust Dieter
Nicolai Hermann
Wit Bernard de
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