Work

Holography of 3D Flat Cosmological Horizons

Year: 2013

Type: article

Abstract: We provide a first derivation of the Bekenstein-Hawking entropy of 3D flat cosmological horizons in terms of the counting of states in a dual field theory. These horizons appear in the flat limit of nonextremal rotating Banados-Teitleboim-Zanelli black holes and are remnants of the inner horizons. They also satisfy the first law of thermodynamics. We study flat holography as a limit of AdS(3)/CFT(2) to semiclassically compute the density of states in the dual theory, which is given by a contraction of a 2D conformal field theory, exactly reproducing the bulk entropy in the limit of large charges. We comment on how the dual theory reproduces the bulk first law and how cosmological bulk excitations are matched with boundary quantum numbers.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.110.141302

Authors: Arjun Bagchi, Stéphane Detournay, Reza Fareghbal, Joan Simón

Institutions: Maxwell Institute for Mathematical Sciences, University of Edinburgh, Harvard University, Institute for Research in Fundamental Sciences

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green