The Folded Spin-1/2 XXZ Model: II. Thermodynamics and Hydrodynamics with a Minimal Set of Charges – Archive ouverte HAL

Lenart Zadnik 1 Kemal Bidzhiev 1 Maurizio Fagotti 1

Lenart Zadnik, Kemal Bidzhiev, Maurizio Fagotti. The Folded Spin-1/2 XXZ Model: II. Thermodynamics and Hydrodynamics with a Minimal Set of Charges. SciPost Phys., 2021, 10, pp.099. ⟨10.21468/SciPostPhys.10.5.099⟩. ⟨hal-03022690⟩

We study the (dual) folded spin-1/2 XXZ model in the thermodynamic limit. We focus, in particular, on a class of local macrostates that includes Gibbs ensembles. We develop a thermodynamic Bethe Ansatz description and work out generalised hydrodynamics at the leading order. Remarkably, in the ballistic scaling limit the junction of two local macrostates results in a discontinuity in the profile of essentially any local observable.

  • 1. LPTMS - Laboratoire de Physique Théorique et Modèles Statistiques