Fractional branes and the entropy of 4D black holes | Zendy

Neil R. Constable | Zendy; Robert C. Myers | Zendy; Clifford V. Johnson | Zendy

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Fractional branes and the entropy of 4D black holes

Author(s) -

Neil R. Constable,

Robert C. Myers,

Clifford V. Johnson

Publication year - 2000

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2000/09/039

Subject(s) - physics , brane cosmology , extremal black hole , black brane , string theory , entropy (arrow of time) , black hole thermodynamics , mathematical physics , theoretical physics , quantum mechanics

We reconsider the four dimensional extremal black hole constructed in typeIIB string theory as the bound state of D1-branes, D5-branes, momentum, andKaluza-Klein monopoles. Specifically, we examine the case of an arbitrarynumber of monopoles. Consequently, the weak coupling calculation of themicroscopic entropy requires a study of the D1-D5 system on an ALE space. Wefind that the complete expression for the Bekenstein-Hawking entropy isobtained by taking into account the massless open strings stretched between thefractional D-branes which arise in the orbifold limit of the ALE space. Theblack hole sector therefore arises as a mixed Higgs-Coulomb branch of aneffective 1+1 dimensional gauge theory.Comment: 12 pages. 1 figure. v2: References adde

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