The GGE averaged currents of the classical Toda chain. (13th November 2019)

• Record Type: Journal Article
• Authors: Cao, Xiangyu; Bulchandani, Vir B; Spohn, Herbert
• Is Part Of: Journal of physics. Volume 52:Number 49(2019)
• Publication Date: 2019-11-13
• Subjects: Toda lattice -- generalized hydrodynamics -- integrable -- random matrix; Mathematical physics -- Periodicals; Statistical physics -- Periodicals; Quantum theory -- Periodicals; Matter -- Properties -- Periodicals; 530.105
• DOI: 10.1088/1751-8121/ab5019
• Languages: English
• ISSNs: 1751-8113

Abstract

Abstract: The Toda chain with random initial data is studied. Of particular interest are generalized Gibbs ensembles, their averaged conserved fields, and the averages of the corresponding currents. While averaged fields are well-understood, the description of averaged currents has hitherto relied on the collision-rate assumption. For the Toda chain, the rate assumption can be investigated numerically. Here, we provide convincing evidence for the validity of the rate assumption. This lends further support to the idea that generalized Euler-type equations have a structure common to all integrable extensive systems.