Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1996-04-22
Nucl.Phys. B475 (1996) 627-644
Physics
High Energy Physics
High Energy Physics - Theory
29 p. Uses phyzzx. Two lines corrected in text, references added
Scientific paper
10.1016/0550-3213(96)00318-5
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. % accessible to an observer at infinity. 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 Cveti\v{c}-Youm dyon is described in some detail, as an important example.
Larsen Finn
Wilczek Frank
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