Nonperturbative effects on the string world sheet

M. Dine, N. Seiberg, X. G. Wen, E. Witten

Research output: Contribution to journalArticlepeer-review

325 Scopus citations


We show that the space-time superpotential, which is known to receive no string theoretic corrections in finite orders in α′, is modified by world-sheet instantons. This has a number of interesting consequences for the physics of compactification schemes which lead to low-energy supersymmetry. We also present an argument that left-right symmetric Calabi-Yau spaces lead to conformally invariant sigma models both perturbatively and nonperturbatively.

Original languageEnglish (US)
Pages (from-to)769-789
Number of pages21
JournalNuclear Physics, Section B
Issue number4
StatePublished - Dec 22 1986

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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