The centaur-algebra of observables

Autor: Sergio E. Aguilar-Gutierrez, Eyoab Bahiru, Ricardo Espíndola
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-17 (2024)
Druh dokumentu: article
ISSN: 1029-8479
54812844
DOI: 10.1007/JHEP03(2024)008
Popis: Abstract This letter explores a transition in the type of von Neumann algebra for asymptotically AdS spacetimes from the implementations of the different gravitational constraints. We denote it as the centaur-algebra of observables. In the first part of the letter, we employ a class of flow geometries interpolating between AdS2 and dS2 spaces, the centaur geometries. We study the type II ∞ crossed product algebra describing the semiclassical gravitational theory, and we explore the algebra of bounded sub-regions in the bulk theory following T T ¯ $$ T\overline{T} $$ deformations of the geometry and study the gravitational constraints with respect to the quasi-local Brown-York energy of the system at a finite cutoff. In the second part, we study arbitrary asymptotically AdS spacetimes, where we implement the boundary protocol of an infalling observer modeled as a probe black hole proposed by [1] to study modifications in the algebra. In both situations, we show how incorporating the constraints requires a type II1 description.
Databáze: Directory of Open Access Journals
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