20.500.12556/RUL-107409 Non-equilibrium quantum transport in presence of a defect: the non-interacting case We study quantum transport after an inhomogeneous quantum quench in a free fermion lattice system in the presence of a localised defect. Using a new rigorous analytical approach for the calculation of large time and distance asymptotics of physical observables, we derive the exact profiles of particle density and current. Our analysis shows that the predictions of a semiclassical approach that has been extensively applied in similar problems match exactly with the correct asymptotics, except for possible finite distance corrections close to the defect. We generalise our formulas to an arbitrary non-interacting particle-conserving defect, expressing them in terms of its scattering properties. quantum mechanics quantum transport nonequilibrium statistical physics localized defects free fermions quantum quenches kvantna mehanika kvantni transport neravnovesna statistična fizika true false false Angleški jezik Slovenski jezik Neznano 2019-04-11 14:18:19 2019-04-11 14:18:20 2022-08-19 03:49:23 0000-00-00 00:00:00 2019 0 0 34 str. art. no. 004 Vol. 6 Jan. 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 530.145 2542-4653 10.21468/SciPostPhys.6.1.004 3301220 526154521 RAZ_Ljubotina_Marko_i2019.pdf RAZ_Ljubotina_Marko_i2019.pdf 1 5469965ACE1245344B96919FDFF01561 1f1fd5b791a000135fc60cc652495722102aec38ee17bcfe3d66f956e8569c72 6d20c46c-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=118226 https://scipost.org/10.21468/SciPostPhys.6.1.004 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=140317 Fakulteta za matematiko in fiziko 0 0 0