Strong/weak coupling duality relations for non-supersymmetric string theories

Julie D. Blum, Keith R. Dienes

Research output: Contribution to journalArticlepeer-review

88 Scopus citations


Both the supersymmetric SO(32) and E8 × E8 heterotic strings in ten dimensions have known strong-coupling duals. However, it has not been known whether there also exist strong-coupling duals for the non-supersymmetric heterotic strings in ten dimensions. In this paper, we construct explicit open-string duals for the circle compactifications of several of these non-supersymmetric theories, among them the tachyon-free SO(16) × SO(16) string. Our method involves the construction of heterotic and open-string interpolating models that continuously connect non-supersymmetric strings to supersymmetric strings. We find that our non-supersymmetric dual theories have exactly the same massless spectra as their heterotic counterparts within a certain range of our interpolations. We also develop a novel method for analyzing the solitons of non-supersymmetric open-string theories, and find that the solitons of our dual theories also agree with their heterotic counterparts. These are therefore the first known examples of strong/weak coupling duality relations between non-supersymmetric, tachyon-free string theories. Finally, the existence of these strong-coupling duals allows us to examine the non-perturbative stability of these strings, and we propose a phase diagram for the behavior of these strings as a function of coupling and radius.

Original languageEnglish (US)
Pages (from-to)83-159
Number of pages77
JournalNuclear Physics B
Issue number1-2
StatePublished - Apr 13 1998

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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