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Updated: Aug 30, 2025

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Onset of Quantum Chaos in Random Field Theories
Micha Berkooz1, Adar Sharon1, Navot Silberstein1
1Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 7610001, Israel.
Abstract:
We study the quantum Lyapunov exponent λ_{L} in theories with spacetime-independent disorder. We first derive self-consistency equations for the two- and four-point functions for products of N models coupled by disorder at large N, generalizing the equations appearing in SYK-like models. We then study families of theories in which the disorder coupling is an exactly marginal deformation, allowing us to follow λ_{L} from weak to strong coupling. We find interesting behaviors, including a discontinuous transition into chaos, mimicking classical KAM theory.
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