Black Holes with Multiple Charges and the Correspondence Principle

TL;DR

This paper examines the entropy of near extremal black holes with multiple charges within the correspondence principle framework, finding that entropy can be explained by open strings on D-branes except in the four-charge case, which may involve brane-antibrane pairs.

Contribution

It extends the correspondence principle to black holes with multiple charges and explores entropy accounting across different charge configurations.

Findings

Entropy matches open string descriptions for most cases.

Four-charge black holes may require brane-antibrane explanations.

The correspondence principle is applicable to complex charged black holes.

Abstract

We consider the entropy of near extremal black holes with multiple charges in the context of the recently proposed correspondence principle of Horowitz and Polchinski, including black holes with two, three and four Ramond-Ramond charges. We find that at the matching point the black hole entropy can be accounted for by massless open strings ending on the D-branes for all cases except a black hole with four Ramond-Ramond charges, in which case a possible resolution in terms of brane-antibrane excitations is considered.