BPS states, string duality, and nodal curves on K3

Shing Tung Yau*, Eric Zaslow

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


We describe the counting of BPS states of Type II on K3 by relating the supersymmetric cycles of genus g to the number of rational curves with g double points on K3. The generating function for the number of such curves is the left-moving partition function of the bosonic string.

Original languageEnglish (US)
Pages (from-to)503-512
Number of pages10
JournalNuclear Physics B
Issue number3
StatePublished - Jul 15 1996


  • BPS
  • K3
  • Rational curves
  • S-duality

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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