A Note on Intersecting $D$-branes and Black Hole Entropy

Abstract

In four dimensions there are 4 different types of extremal Maxwell/scalar black holes characterized by a scalar coupling parameter $a$ with $a=0,1/\sqrt{3},1,\sqrt{3}$. These black holes can be described as intersections of ten--dimensional non-singular Ramond-Ramond objects, i.e.~$D$-branes, waves and Taub-NUT solitons. Using this description it can be shown that the four--dimensional black holes decompactify near the core to higher--dimensional {\em non-singular} solutions. In terms of these higher--dimensional non-singular solutions we define a non-vanishing entropy for all four black hole types from a four--dimensional point of view.

10 pages, latex

References in corpus (12)

• Supersymmetry and Attractors
• Entropy and Temperature of Black 3-Branes
• Universality of Sypersymmetric Attractors
• Harmonic superpositions of M-branes
• Solitonic Strings and BPS Saturated Dyonic Black Holes
• Intersecting M-branes
• Intersecting M-branes as Four-Dimensional Black Holes
• Internal Structure of Black Holes
• Rotating Black Holes which Saturate a Bogomol'nyi Bound
• Intersecting D-Branes in ten and six dimensions
• Bound States of Black Holes and Other $P$-Branes
• Intersecting M-branes and bound states

Cited by in corpus (11)

• Domain Walls from Anti-de Sitter Spacetime
• Euclidean-signature Supergravities, Dualities and Instantons
• Multiple Intersections of D-branes and M-branes
• Entropy of N=2 black holes and their M-brane description
• Non-Extreme Black Holes from Intersecting M-Branes
• Extremal Branes as Elementary Particles
• M-branes, anti-M-branes and nonextremal black holes
• Classical and quantum aspects of 4 dimensional black holes
• Four-dimensional High-Branes as Intersecting D-Branes
• Solitons, Black Holes and Duality in String Theory
• Decompactification near the horizon and non-vanishing entropy