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Current mean values in the XYZ model

Levente Pristyák, Balázs Pozsgay

SciPost Phys. 14, 158 (2023) · published 15 June 2023


The XYZ model is an integrable spin chain which has an infinite set of conserved charges, but it lacks a global $U(1)$-symmetry. We consider the current operators, which describe the flow of the conserved quantities in this model. We derive an exact result for the current mean values, valid for any eigenstate in a finite volume with periodic boundary conditions. This result can serve as a basis for studying the transport properties of this model within Generalized Hydrodynamics.

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