20.500.12556/RUL-111523 Kardar-Parisi-Zhang physics in the quantum Heisenberg magnet Equilibrium spatiotemporal correlation functions are central to understanding weak nonequilibrium physics. In certain local one-dimensional classical systems with three conservation laws they show universal features. Namely, fluctuations around ballistically propagating sound modes can be described by the celebrated Kardar-Parisi-Zhang (KPZ) universality class. Can such a universality class be found also in quantum systems? By unambiguously demonstrating that the KPZ scaling function describes magnetization dynamics in the SU(2) symmetric Heisenberg spin chain we show, for the first time, that this is so. We achieve that by introducing new theoretical and numerical tools, and make a puzzling observation that the conservation of energy does not seem to matter for the KPZ physics. quantum statistical mechanics kvantna statistična mehanika true false false Angleški jezik Slovenski jezik Neznano 2019-10-02 13:52:17 2019-10-02 13:52:17 2022-08-23 03:43:37 0000-00-00 00:00:00 2019 0 0 Str. 210602-1-210602-6 iss. 21 Vol. 122 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 536.93 0031-9007 10.1103/PhysRevLett.122.210602 3366756 1282575 RAZ_Ljubotina_Marko_i2019.pdf RAZ_Ljubotina_Marko_i2019.pdf 1 0BCFB51FB883A14F8F621371DEEA9A0F b5417fc426314202c9ac0ffed2a3dd99b992ae87c578e0d25a8bbc74ba26a111 69652a4b-a1b7-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=123392 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.210602 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=140309 Fakulteta za matematiko in fiziko 0 0 0