paper

Breitenlohner-Freedman bound on hyperbolic tilings

arXiv:2205.05081 · doi:10.1103/PhysRevLett.130.091604

Abstract

We establish how the Breitenlohner-Freedman (BF) bound is realized on tilings of two-dimensional Euclidean Anti-de Sitter space. For the continuum, the BF bound states that on Anti-de Sitter spaces, fluctuation modes remain stable for small negative mass-squared . This follows from a real and positive total energy of the gravitational system. For finite cutoff , we solve the Klein-Gordon equation numerically on regular hyperbolic tilings. When , we find that the continuum BF bound is approached in a manner independent of the tiling. We confirm these results via simulations of a hyperbolic electric circuit. Moreover, we propose a novel circuit including active elements that allows to further scan values of above the BF bound.

11 pages, 9 figures, improved discussion and analysis, corrected typos

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