20.500.12556/RUL-155056 Superdiffusive magnetization transport in the XX spin chain with nonlocal dephasing 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. condensed matter physics statistical physics quantum spin chains nonequilibrium systems fizika kondenzirane snovi statistična fizika kvantne spinske verige neravnovesni sistemi true false true Angleški jezik Slovenski jezik Članek v reviji 2024-03-18 12:49:48 2024-03-18 12:49:50 2024-03-19 03:43:25 0000-00-00 00:00:00 2024 0 0 Str. 075105-1-075105-9 iss. 7 Vol. 109 2024 0000-00-00 PostprintKoncna NiDoloceno NiDoloceno 0000-00-00 0000-00-00 2024-02-05 538.9 2469-9950 10.1103/PhysRevB.109.075105 188677379 2311.07375.pdf 2311.07375.pdf 1 4E74B7E054173A9B6123DE54273F1035 f2720ed53fd9db88d2f57abb6ec936e791cf02b41e6a804f1b9e6fe82f8b37e3 c0780125-e51e-11ee-ae74-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=181790 https://journals.aps.org/prb/abstract/10.1103/PhysRevB.109.075105 0 c99eaf12-e51e-11ee-ae74-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=181791 Fakulteta za matematiko in fiziko 0 0 0