20.500.12556/RUL-122925 A class of states supporting diffusive spin dynamics in the isotropic Heisenberg model The spin transport in isotropic Heisenberg model in the sector with zero magnetization is generically super- diffusive. Despite that, we here demonstrate that for a specific set of domain-wall-like initial product states it can instead be diffusive. We theoretically explain the time evolution of such states by showing that in the limiting regime of weak spatial modulation they are approximately product states for very long times, and demonstrate that even in the case of larger spatial modulation the bipartite entanglement entropy grows only logarithmically in time. In the limiting regime we derive a simple closed equation governing the dynamics, which in the continuum limit and for the initial step magnetization profile results in a solution expressed in terms of Fresnel integrals. quantum mechanics spin models quantum transport Heisenberg chains diffusion kvantna mehanika spinski modeli kvantni transport Heisenbergove verige difuzija true false false Angleški jezik Slovenski jezik Neznano 2020-12-16 14:42:00 2020-12-16 14:42:01 2022-09-03 04:10:22 0000-00-00 00:00:00 2017 0 0 10 str. art. no. 475002 Vol. 50 2017 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 530.145 1751-8113 10.1088/1751-8121/aa8bdc 3166052 3692314 RAZ_Ljubotina_Marko_2017.pdf RAZ_Ljubotina_Marko_2017.pdf 1 1A1B01F2BD3F44E86908EDDA1F166A05 4d80e6ec12661788126b2a951e604715a5f3c3989affd2b31f2227b23432361e 21d0e8e0-a1bb-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=138175 https://iopscience.iop.org/article/10.1088/1751-8121/aa8bdc 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=140142 Fakulteta za matematiko in fiziko 0 0 0