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Selected Honourable Mentions from the Annual Essay Competition of the Gravity Research Foundation for the Year 2006No Access

KILLING HORIZONS KILL HORIZON DEGREES

ESA Advanced Concepts Team (DG-P), ESTEC, Keplerlaan 1, NL-2201 AZ Noordwijk, The Netherlands

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and

Institute for Theoretical Physics, University of Leipzig, Augustusplatz 10-11, D-04109 Leipzig, Germany

Center for Theoretical Physics, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA

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https://doi.org/10.1142/S0218271806009571Cited by:0 (Source: Crossref)

Abstract

Frequently, it is argued that the microstates responsible for the Bekenstein–Hawking entropy should arise from some physical degrees of freedom located near or on the black hole horizon. In this essay, we elucidate that instead entropy may emerge from the conversion of physical degrees of freedom, attached to a generic boundary, into unobservable gauge degrees of freedom attached to the horizon. By constructing the reduced phase space, it can be demonstrated that such a transmutation indeed takes place for a large class of black holes, including Schwarzschild.

This essay received an "honorable mention" in the 2006 Essay Competition of the Gravity Research Foundation.

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Vol. 15, No. 12

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Received 13 September 2006

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