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Condensed Matter > Statistical Mechanics

Title: Current mean values in the XYZ model

Abstract: 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.
Comments: 27 pages, v2: minor modifications
Subjects: Statistical Mechanics (cond-mat.stat-mech); Exactly Solvable and Integrable Systems (nlin.SI)
Journal reference: SciPost Phys. 14, 158 (2023)
DOI: 10.21468/SciPostPhys.14.6.158
Cite as: arXiv:2211.00698 [cond-mat.stat-mech]
  (or arXiv:2211.00698v2 [cond-mat.stat-mech] for this version)

Submission history

From: Balazs Pozsgay [view email]
[v1] Tue, 1 Nov 2022 18:47:58 GMT (29kb)
[v2] Thu, 12 Jan 2023 12:28:51 GMT (30kb)

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