Classical hair in string theory I: General formulation

Finn Larsen, Frank Wilczek

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


We discuss why classical hair is desirable for the description of black holes, and show that it arises generically in a wide class of field theories involving extra dimensions. We develop the canonical formalism for theories with the matter content that arises in string theory. General covariance and duality are used to determine the form of surface terms. We derive an effective theory (reduced Hamiltonian) for the hair in terms of horizon variables. Solution of the constraints expresses these variables in terms of hair accessible to an observer at infinity. We exhibit some general properties of the resulting theory, including a formal identification of the temperature and entropy. The Cvetič-Youm dyon is described in some detail as an important example.

Original languageEnglish (US)
Pages (from-to)627-644
Number of pages18
JournalNuclear Physics B
Issue number3
StatePublished - Sep 16 1996
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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