Year: 2020
Type: article
Abstract: We demonstrate analytically and verify numerically that the out-of-time order correlator is given by the thermal average of Loschmidt echo signals. This provides a direct link between the out-of-time-order correlator-a recently suggested measure of information scrambling in quantum chaotic systems-and the Loschmidt echo, a well-appreciated familiar diagnostic that captures the dynamical aspect of chaotic behavior in the time domain, and is accessible to experimental studies.
Source: Physical Review Letters
Authors: Bin Yan, Lukasz Cincio, Wojciech H. Zurek
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: Materials Sciences and Engineering Division, U.S. Department of Energy, Silicon Valley Community Foundation, Fetzer Institute, Foundational Questions Institute, Office of Science, National Nuclear Security Administration, Basic Energy Sciences, Laboratory Directed Research and Development, Los Alamos National Laboratory, Division of Materials Sciences and Engineering
OpenAlex ID: W2921746574