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World-volume effective theory for higher-dimensional black holes.

Roberto Emparan¹, Troels Harmark, Vasilis Niarchos

¹Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluis Companys 23, 08010 Barcelona, Spain. emparan@ub.edu

Physical Review Letters

|June 13, 2009

Summary

Higher-dimensional black holes possess unique properties due to horizons with disparate lengths. A new effective theory, the blackfold, describes these black hole dynamics and reveals novel horizon geometries.

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Area of Science:

Theoretical Physics
Gravitational Physics
String Theory

Background:

Four-dimensional black holes have well-understood properties.
Higher-dimensional black holes exhibit novel phenomena not seen in lower dimensions.

Purpose of the Study:

To identify the key feature driving novel properties in higher-dimensional black holes.
To develop a theoretical framework for understanding their dynamics.

Main Methods:

Development of a long-distance world-volume effective theory.
Analysis of black hole dynamics at scales much larger than a short scale.
Modeling black holes as blackfolds (black branes on curved submanifolds).

Main Results:

Identified two characteristic lengths of very different size as the main feature of higher-dimensional black hole horizons.
The blackfold approach captures black hole dynamics in a large-scale limit.
Revealed novel horizon geometries and topologies, extending beyond the black ring.

Conclusions:

The blackfold framework provides a new organizing principle for higher-dimensional black hole dynamics.
This approach offers insights into complex horizon structures beyond the standard black ring.
Highlights the importance of horizon geometry in understanding higher-dimensional gravity.