Spin diffusion from an inhomogeneous quench in an integrable system
Marko Ljubotina; Marko Žnidarič; Tomaž Prosen · 2017 · Nature Communications
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Abstract
Generalized hydrodynamics predicts universal ballistic transport in integrable lattice systems when prepared in generic inhomogeneous initial states. However, the ballistic contribution to transport can vanish in systems with additional discrete symmetries. Here we perform large scale numerical simulations of spin dynamics in the anisotropic Heisenberg XXZ spin 1/2 chain starting from an inhomogeneous mixed initial state which is symmetric with respect to a combination of spin reversal and spatial reflection. In the isotropic and easy-axis regimes we find non-ballistic spin transport which we
Abstract by Marko Ljubotina; Marko Žnidarič; Tomaž Prosen, Nature Communications (2017) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.1038/ncomms16117