Rapid spatial equilibration of a particle in a box

Artur S L Malabarba, Noah Linden, Anthony J. Short

Research output: Contribution to journalArticle (Academic Journal)peer-review

4 Citations (Scopus)
465 Downloads (Pure)


We study the equilibration behavior of a quantum particle in a one-dimensional box, with respect to a coarse-grained position measurement (whether it lies in a certain spatial window or not). We show that equilibration in this context indeed takes place and does so very rapidly, in a time comparable to the time for the initial wave packet to reach the edges of the box. We also show that, for this situation, the equilibration behavior is relatively insensitive to the precise choice of position measurements or initial condition.

Original languageEnglish
Article number 062128
Number of pages8
JournalPhysical Review E: Statistical, Nonlinear, and Soft Matter Physics
Issue number6
Publication statusPublished - 16 Dec 2015

Bibliographical note

Date of Acceptance: 19/11/2015


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