Comment on "Non-monotonicity in the Quantum-Classical Transition: Chaos Induced by Quantum Effects"

Abstract

In a recent Letter [PRL 101, 074101 (2008)], Kapulkin and Pattanayak presented evidence that a quantum Duffing oscillator, sufficiently damped so that it is not classically chaotic, becomes chaotic in the transition region between quantum and classical motion. If true, this would be a striking result. However, Kapulkin and Pattanayak did not calculate the Lyapunov exponent for the system, usually regarded as the litmus-test of chaos. Here we perform this calculation, which throws considerable doubt upon their conclusions.

1 page, revtex 4, 1 eps figure

References in corpus (1)

• Non-monotonicity in the quantum-classical transition: Chaos induced by quantum effects

Cited by in corpus (5)

• Signatures of Chaos in Time Series Generated by Many-Spin Systems at High Temperatures
• Functional renormalization group for quantized anharmonic oscillator
• Lyapunov exponents of quantum trajectories beyond continuous measurements
• Reply to Comment on "Non-monotonicity in the Quantum-Classical Transition: Chaos Induced by Quantum Effects"
• Photon waiting time distributions: a keyhole into dissipative quantum chaos