D-Brane instantons and K-theory charges

Juan Maldacena, Gregory Moore, Nathan Seiberg

Research output: Contribution to journalArticlepeer-review

122 Scopus citations


We discuss some physical issues related to the K-theoretic classification of D-brane charges, putting an emphasis on the role of D-brane instantons. The relation to D-instantons provides a physical interpretation to the mathematical algorithm for computing K-theory known as the "Atiyah-Hirzebruch spectral sequence". Conjecturally, a formulation in terms of D-instantons leads to a computationally useful formulation of K-homology in general. As an application and illustration of this viewpoint we discuss some issues connected with D-brane charges associated with branes in WZW models. We discuss the case of SU(3) in detail, and comment on the general picture of branes in SU(N), based on a recent result of M. Hopkins.

Original languageEnglish (US)
Pages (from-to)XLXII-41
JournalJournal of High Energy Physics
Issue number11
StatePublished - 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


  • Anomalies in field and string theories
  • Conformai field models in string theory
  • D-branes
  • Solitons monopoles and instantons


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