Counting dyons in four-dimensional N = 4 string theory

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Abstract

We present an index formula that counts the number of dyonic BPS particles of given charges (qe, qm) in four dimensional N = 4 string theory. The formula is invariant under the duality group, and its asymptotic growth matches with the Bekenstein-Hawking entropy. We give a derivation of this result in terms of the type II fivebrane.

Original languageEnglish (US)
Pages (from-to)141-148
Number of pages8
JournalNuclear Physics B - Proceedings Supplements
Volume58
Issue number1-3
DOIs
StatePublished - Sep 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

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