Where are the black hole entropy degrees of freedom?
Loading...
Date
2016-01-06
Authors
Das, Saurya
Shankaranarayanan, S.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Understanding the area-proportionality of black hole entropy (the ‘Area Law’) from an underlying
fundamental theory has been one of the goals of all models of quantum gravity. A key question
that one asks is: where are the degrees of freedom giving rise to black hole entropy located? Taking
the point of view that entanglement between field degrees of freedom inside and outside the horizon
can be a source of this entropy, we show that when the field is in its ground state, the degrees of
freedom near the horizon contribute most to the entropy, and the area law is obeyed. However,
when it is in an excited state, degrees of freedom far from the horizon contribute more significantly,
and deviations from the area law are observed. In other words, we demonstrate that horizon degrees
of freedom are responsible for the area law.
Description
Sherpa Romeo green journal. “This is an author-created, un-copyedited version of an article accepted for publication/published in Classical and Quantum Gravity. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it."
Keywords
Black hole entropy , Degrees of freedom , Entropy , Horizon
Citation
Das, S., & Shankaranarayanan, S. (2007). Where are the black-hole entropy degrees of freedom? Classical and Quantum Gravity, 24(20), 5299-5306. https://doi.org/10.1088/0164-9381/24/20/022