Evidence for Heterotic - Type I String Duality

Details Evidence for Heterotic - Type I String Duality Evidence for Heterotic - Type I String Duality

1995-10-23

arxiv.org/abs/hep-th/9510169v1

Nucl.Phys.B460:525-540,1996

Physics

High Energy Physics

High Energy Physics - Theory

harvmac, 21 pages

Scientific paper

10.1016/0550-3213(95)00614-1

A study is made of the implications of heterotic string $T$-duality and extended gauge symmetry for the conjectured equivalence of heterotic and Type I superstrings. While at first sight heterotic string world-sheet dynamics appears to conflict with Type I perturbation theory, a closer look shows that Type I perturbation theory ``miraculously'' breaks down, in some cases via novel mechanisms, whenever the heterotic string has massless particles not present in Type I perturbation theory. This strongly suggests that the two theories actually are equivalent. As further evidence in the same direction, we show that the Dirichlet one-brane of type I string theory has the same world-sheet structure as the heterotic string.

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