Double-horizon limit and decoupling of the dynamics at the horizon | Zendy

H. Arfaei | Zendy; Reza Fareghbal | Zendy

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Double-horizon limit and decoupling of the dynamics at the horizon

Author(s) -

H. Arfaei,

Reza Fareghbal

Publication year - 2007

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2007/01/060

Subject(s) - physics , horizon , attractor , decoupling (probability) , event horizon , classical mechanics , black hole (networking) , mathematical physics , mathematical analysis , mathematics , computer network , routing protocol , routing (electronic design automation) , control engineering , astronomy , computer science , engineering , link state routing protocol

We show that the attractor mechanism for generic black hole is a consequenceof the double-horizon. Investigation of equations of motion shows that in thecase of the double-horizon black holes, the dynamics of the geometry, thescalars and the gauge fields at the horizon decouples from the rest of thespace. In the general case, the value of the fields at the horizon satisfies anumber of differential equations of functions of the $\theta$ coordinate. We show this for the case of rotating and non-rotating electrically chargedblack holes in the general two derivative theories of gravity and f(R)gravities including the theories with cosmological constant.Comment: 17 pages, no figures, typos corrected, reference adde

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