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Generic Isolated Horizons and their Applications

Abhay Ashtekar·Christopher Beetle·Olaf Dreyer·Stephen Fairhurst·Badri Krishnan·Jerzy Lewandowski·Jacek Wisniewski
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Abstract

Boundary conditions defining a generic isolated horizon are introduced. They generalize the notion available in the existing literature by allowing the horizon to have distortion and angular momentum. Space-times containing a black hole, itself in equilibrium but possibly surrounded by radiation, satisfy these conditions. In spite of this generality, the conditions have rich consequences. They lead to a framework, somewhat analogous to null infinity, for extracting physical information, but now in the \textit{strong} field regions. The framework also generalizes the zeroth and first laws of black hole mechanics to more realistic situations and sheds new light on the `origin' of the first law. Finally, it provides a point of departure for black hole entropy calculations in non-perturbative quantum gravity.

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Abhay Ashtekar, Christopher Beetle, Olaf Dreyer, Stephen Fairhurst, Badri Krishnan, Jerzy Lewandowski, Jacek Wisniewski. 2000-08-17. Generic Isolated Horizons and their Applications. https://doi.org/10.1103/physrevlett.85.3564

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