title: Comparing classical and quantum equilibration.
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.
authors.affiliation: H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, United Kingdom.
authors.forename: Artur S L
authors.initials: AS
authors.lastname: Malabarba
authors.affiliation: Institut für Theoretische Physik, Leibniz Universität, Appelstraße 2, 30167 Hannover, Germany.
authors.forename: Terry
authors.initials: T
authors.lastname: Farrelly
authors.affiliation: H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, United Kingdom.
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: Short