Interacting black holes

• Type: Article in International Scientific Journal
• Date: 2000

Authors

Costa, MS (Author) Other; Perry, MJ (Author) Other

Journal

Title: Nuclear Physics B

Vol. 591

Pages: 469-487

ISSN: 0550-3213

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 52 Citations

Scopus - 54 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-007-ATD

DOI: 10.1016/s0550-3213(00)00577-0

Abstract (EN): We revisit the geometry representing l collinear Schwarzschild black holes. It is seen that the black holes' horizons are deformed by their mutual gravitational attraction. The geometry has a string like conical singularity that connects the holes but has nevertheless a well defined action. Using standard gravitational thermodynamics techniques we determine the free energy for two black holes at fixed temperature and distance, their entropy and mutual force. When the black holes are far apart the results agree with newtonian gravity expectations. This analyses is generalized to the case of charged black holes. Then we consider black holes embedded in string/M-theory as bound states of branes. Using the effective string description of these bound states and for large separation we reproduce exactly the semi-classical result for the entropy, including the correction associated with the interaction between the holes.

Language: English

Type (Professor's evaluation): Scientific