Small instantons, del Pezzo surfaces and type I′ theory

Michael R. Douglas, Sheldon Katz, Cumrun Vafa

Research output: Contribution to journalArticlepeer-review


Small instantons of exceptional groups arise geometrically by a collapsing del Pezzo surface in a CY. We use this to explain the physics of a 4-brane probe in type I′ compactification to nine dimensions.

Original languageEnglish (US)
Pages (from-to)155-172
Number of pages18
JournalNuclear Physics B
Issue number1-2
StatePublished - Jul 21 1997
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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