Open string instantons and superpotentials

Shamit Kachru, Sheldon Katz, Albion Lawrence, John McGreevy

Research output: Contribution to journalArticlepeer-review


We study the F terms N=1 supersymmetric, d=4 gauge theories arising from D(p+3)-branes wrapping supersymmetric p-cycles in a Calabi-Yau threefold. If p is even the spectrum and superpotential for a single brane are determined by purely classical (α′→0) considerations. If p = 3, superpotentials for massless modes are forbidden to all orders in α′ and may only be generated by open string instantons. For this latter case we find that such instanton effects are genetically present. Mirror symmetry relates even and odd p and thus perturbative and nonperturbative superpotentials; we provide a preliminary discussion of a class of examples of such mirror pairs.

Original languageEnglish (US)
Article number026001
Pages (from-to)1-9
Number of pages9
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number2
StatePublished - Jul 15 2000
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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