Marko Žnidarič (Author)

Abstract

We study a recently discussed XX spin chain with nonlocal dephasing [Y.-P. Wang etal., arXiv:2310.03069] in a steady-state boundary-driven setting, confirming superdiffusive magnetization transport in the thermodynamic limit. The emergence of superdiffusion is rather interesting as the Lindblad operators causing it are a coherent sum of two terms, each of which would separately cause diffusion. One therefore has a quantum phenomenon where a coherent sum of two diffusive terms results in superdiffusion. We also study perturbations of the superdiffusive model, finding that breaking the exact form of dissipators, as well as adding interactions to the XXchain, results in superdiffusion changing into diffusion.

Keywords

fizika kondenzirane snovi;statistična fizika;kvantne spinske verige;neravnovesni sistemi;condensed matter physics;statistical physics;quantum spin chains;nonequilibrium systems;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FMF - Faculty of Mathematics and Physics
UDC: 538.9
COBISS: 188677379 Link will open in a new window
ISSN: 2469-9950
Views: 19
Downloads: 3
Average score: 0 (0 votes)
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Other data

Secondary language: Slovenian
Secondary keywords: fizika kondenzirane snovi;statistična fizika;kvantne spinske verige;neravnovesni sistemi;
Type (COBISS): Article
Pages: str. 075105-1-075105-9
Volume: ǂVol. ǂ109
Issue: ǂiss. ǂ7
Chronology: 2024
DOI: 10.1103/PhysRevB.109.075105
ID: 23171167