IT from QUBIT or ALL from HALL?

Abstract

Generalized $1+0$-dimensional Liouvillean dynamics describing deformations of the Sachdev-Ye-Kitaev (SYK) model, as well as the various $1+1$-dimensional dilaton and Horava-Lifshitz gravity theories, can all be mapped onto single-particle quantum mechanics of a non-relativistic charge propagating in a (generally, curved) $2d$ space and subject to a (generally, non-uniform) magnetic field. The latter description provides a standard playground for the phenomenon of Quantum Hall Effect (QHE), thereby elucidating the intrinsically topological nature of pertinent gravity theories and demystifying their (pseudo)holographic connection to a broad class of the SYK-like models.