Comment on "Chaotic-Integrable Transition in the Sachdev-Ye-Kitaev Model"

Abstract

In arXiv:1707.02197, the authors considered the Sachdev-Ye-Kitaev model with quadratic perturbation (also known as mass-deformed SYK), and claimed that the quantum Lyapunov exponent would vanish in the regime of low temperature and small quartic coupling. We calculate the exponent exactly in that regime and show that it is nonzero.

arXiv comment1 page, 1 figure; accepted version

References in corpus (5)

• Comments on the Sachdev-Ye-Kitaev model
• Solvable model for a dynamical quantum phase transition from fast to slow scrambling
• Chaotic-Integrable Transition in the Sachdev-Ye-Kitaev Model
• Transport and chaos in lattice Sachdev-Ye-Kitaev models
• Phase transition and chaos in charged SYK model

Cited by in corpus (10)

• Quantum complexity in gravity, quantum field theory, and quantum information science
• Krylov complexity as an order parameter for quantum chaotic-integrable transitions
• Delayed Thermalization in Mass-Deformed SYK
• Scrambling versus relaxation in Fermi and non-Fermi liquids
• Quantum to classical crossover in many-body chaos and scrambling from relaxation in a glass
• Krylov Complexity in Mixed Phase Space
• The shared universality of charged black holes and the many many-body SYK model
• Reply to Comment on "Chaotic-Integrable Transition in the Sachdev-Ye-Kitaev Model"
• SYK does not Transit Gloria Mundi just yet
• Quenches and (Pre)Thermalisation in a mixed Sachdev-Ye-Kitaev Model