974 citations · 7.3k across the 94 of their papers we have counts for
23 papers · 1 filter
Superdiffusive magnetization transport in the XX spin chain with non-local dephasing
Marko Znidaric
We study a recently discussed XX spin chain with non-local dephasing [arXiv:2310.03069] in a steady-state boundary-driven setting, confirming superdiffusive magnetization transport…
Less is more: more scattering leading to less resistance
Marko Znidaric
We study the breaking of integrability by a finite density of dilute impurities, specifically the emerging diffusive transport. Provided the distance between impurities (localized…
Absence of superdiffusion in the quasiperiodic spin chain at weak integrability breaking
Marko Znidaric
There has been interest in the spin transport properties of the Aubry-Andre-Harper model at high temperatures under weak integrability breaking, in particular for small interaction…
Response to "Entanglement growth in diffusive systems with large spin"
Marko Znidaric
Reply to a comment by T. Rakovszky, F. Pollmann, and C. W von Keyserlingk [arXiv:2010.07969].
Weak integrability breaking: chaos with integrability signature in coherent diffusion
Marko Znidaric
We study how perturbations affect dynamics of integrable many-body quantum systems, causing transition from integrability to chaos. Looking at spin transport in the Heisenberg chai…
Finite-temperature transport in one-dimensional quantum lattice models
B. Bertini, F. Heidrich-Meisner, C. Karrasch +3
The last decade has witnessed an impressive progress in the theoretical understanding of transport properties of clean, one-dimensional quantum lattice systems. Many physically rel…
Entanglement growth in diffusive systems
Marko Znidaric
We study the influence of conservation laws on entanglement growth. Focusing on systems with U(1) symmetry, i.e., conservation of charge or magnetization, that exhibits diffusive d…
Diffusive transport in a quasiperiodic Fibonacci chain: absence of many-body localization at small interactions
Vipin Kerala Varma, Marko Znidaric
We study high-temperature magnetization transport in a many-body spin-1/2 chain with on-site quasiperiodic potential governed by the Fibonacci rule. In the absence of interactions…
Exact localized and ballistic eigenstates in disordered chaotic spin ladders and the Fermi-Hubbard model
Thomas Iadecola, Marko Znidaric
We demonstrate the existence of exact atypical many-body eigenstates in a class of disordered, interacting one-dimensional quantum systems that includes the Fermi-Hubbard model as…
Interaction instability of localization in quasiperiodic systems
Marko Znidaric, Marko Ljubotina
Integrable models form pillars of theoretical physics because they allow for full analytical understanding. Despite being rare, many realistic systems can be described by models th…
A class of states supporting diffusive spin dynamics in the isotropic Heisenberg model
Marko Ljubotina, Marko Znidaric, Tomaz Prosen
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…
Absence of full many-body localization in the disordered Hubbard chain
P. Prelovšek, O. S. Barišić, M. Žnidarič
We present numerical results within the one-dimensional disordered Hubbard model for several characteristic indicators of the many-body localization (MBL). Considering traditionall…
Influence of dephasing on many-body localization
Mariya V. Medvedyeva, Tomaz Prosen, Marko Znidaric
We study the effects of dephasing noise on a prototypical many-body localized system -- the XXZ spin 1/2 chain with a disordered magnetic field. At times longer than the inverse de…
Anomalous nonequilibrium current fluctuations in the Heisenberg model
Marko Znidaric
We study fluctuation properties of a one-dimensional anisotropic Heisenberg model out of equilibrium, focusing in particular on the gapped regime. Within the open-system setting we…
Magnetization transport in spin ladders and next-nearest-neighbor chains
Marko Znidaric
We study magnetization transport at high temperatures in several spin ladder systems as well as in next-nearest-neighbor coupled spin chains. In the integrable ladder considered we…
Coexistence of diffusive and ballistic transport in a simple spin ladder
Marko Znidaric
We show that in a nonintegrable spin ladder system with the XX type of coupling along the legs and the XXZ type along the rungs there are invariant subspaces that support ballistic…
Transport in a disordered tight-binding chain with dephasing
Marko Znidaric, Martin Horvat
We study transport properties of a disordered tight-binding model (XX spin chain) in the presence of dephasing. Focusing on diffusive behavior in the thermodynamic limit at high en…
Diffusive high-temperature transport in the one-dimensional Hubbard model
Tomaz Prosen, Marko Znidaric
We consider charge and spin transport in the one-dimensional Hubbard model at infinite temperature, half-filling and zero magnetization. Implementing matrix-product-operator simula…
Transport in a one-dimensional isotropic Heisenberg model at high temperature
Marko Znidaric
Magnetization transport in a one-dimensional isotropic spin 1/2 Heisenberg model is studied. It is shown that in a nonequilibrium steady state at high temperature and constant smal…
Finite-temperature magnetization transport of the one-dimensional anisotropic Heisenberg model
Simon Jesenko, Marko Znidaric
We study finite-temperature magnetization transport in a one-dimensional anisotropic Heisenberg model, focusing in particular on the gapped phase. Using numerical simulations by tw…
Spin transport in a one-dimensional anisotropic Heisenberg model
Marko Znidaric
We analytically and numerically study spin transport in a one-dimensional Heisenberg model in linear-response regime at infinite temperature. It is shown that as the anisotropy par…
Dephasing-induced diffusive transport in anisotropic Heisenberg model
Marko Znidaric
We study transport properties of anisotropic Heisenberg model in a disordered magnetic field experiencing dephasing due to external degrees of freedom. In the absence of dephasing…
Charge and spin transport in strongly correlated one-dimensional quantum systems driven far from equilibrium
Giuliano Benenti, Giulio Casati, Tomaz Prosen +2
We study the charge conductivity in one-dimensional prototype models of interacting particles, such as the Hubbard and the t-V spinless fermion model, when coupled to some external…