Comparing classical and quantum equilibration

authored by
Artur S.L. Malabarba, Terry Farrelly, Anthony J. Short
Abstract

By using a physically relevant and theory independent definition of measurement-based equilibration, we show quantitatively that equilibration is easier for quantum systems than for classical systems, in the situation where the initial state of the system is completely known (a pure state). This shows that quantum equilibration is a fundamental aspect of many quantum systems, while classical equilibration relies on experimental ignorance. When the state is not completely known (a mixed state), this framework also shows that quantum equilibration requires weaker conditions.

External Organisation(s)
University of Bristol
Type
Article
Journal
Physical Review E
Volume
94
ISSN
2470-0045
Publication date
15.09.2016
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Statistical and Nonlinear Physics, Statistics and Probability, Condensed Matter Physics
Electronic version(s)
https://doi.org/10.1103/PhysRevE.94.032119 (Access: Unknown)