Work

Superballistic wavepacket spreading in double kicked rotors

Year: 2016

Type: article

Abstract: We investigate possible ways in which a quantum wavepacket spreads. We show that in a general class of double kicked rotor system, a wavepacket may undergo superballistic spreading; i.e., its variance increases as the cubic of time. The conditions for the observed superballistic spreading and two related characteristic time scales are studied. Our results suggest that the symmetry of the studied model and whether it is a Kolmogorov-Arnold-Moser system are crucial to its wavepacket spreading behavior. Our study also sheds new light on the exponential wavepacket spreading phenomenon previously observed in the double kicked rotor system.

Source: Science China Physics Mechanics and Astronomy

DOI: 10.1007/s11433-016-0076-y

Authors: Ping Fang, Jiao Wang

Institution: Xiamen University

Language: English

Topic: Quantum chaos and dynamical systems

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,590

Funder: National Natural Science Foundation of China