Journal article
(Original article)

Horizon entropy with loop quantum gravity methods

Publication Details
Author(s): Sahlmann H, Pranzetti D
Publisher: Elsevier
Publication year: 2015
Volume: 746
Pages range: 209-216
ISSN: 0370-2693


We show that the spherically symmetric isolated horizon can be described in terms of an SU(2) connection and an su(2)-valued one-form, obeying certain constraints. The horizon symplectic structure is precisely the one of 3d gravity in a first order formulation. We quantize the horizon degrees of freedom in the framework of loop quantum gravity, with methods recently developed for 3d gravity with non-vanishing cosmological constant. Bulk excitations ending on the horizon act very similarly to particles in 3d gravity. The Bekenstein-Hawking law is recovered in the limit of imaginary Barbero-Immirzi parameter. Alternative methods of quantization are also discussed.

How to cite
APA: Sahlmann, H., & Pranzetti, D. (2015). Horizon entropy with loop quantum gravity methods. Physics Letters B, 746, 209-216.

MLA: Sahlmann, Hanno, and Daniele Pranzetti. "Horizon entropy with loop quantum gravity methods." Physics Letters B 746 (2015): 209-216.

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