Dual string pairs with N = 1 and N = 2 supersymmetry in four dimensions

Cumrun Vafa, Edward Witten

Research output: Contribution to journalArticlepeer-review

116 Scopus citations


Based on a simple adiabatic argument and by considering the heterotic string counterpart of certain symmetries of Type II superstrings such as (-1)FL and orientation reversal, we construct orbifold candidates for dual pairs of heterotic and Type II string theories with N = 2 and N = 1 supersymmetry. We also analyze from a similar point of view the K3 fibrations that enter in recently proposed N = 2 candidates and use this structure together with certain orientation-reversing symmetries to construct N = 1 dual pairs. These pairs involve generalizations of Type I vacua which can be equivalent to E8 × E8 heterotic strings, while standard Type I vacua are related to SO(32).

Original languageEnglish (US)
Pages (from-to)225-247
Number of pages23
JournalNuclear Physics B - Proceedings Supplements
Issue number1-3
StatePublished - Mar 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics


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