330 citations · 932 across the 19 of their papers we have counts for
19 papers
Superdiffusion and anomalous fluctuations in chiral integrable dynamics
Cristiano Muzzi, Devendra Singh Bhakuni, Marcello Dalmonte +2
Symmetries strongly influence transport properties of quantum many-body systems, and can lead to deviations from the generic case of diffusion. In this work, we study the impact of…
Slow dynamics from a nested hierarchy of frozen states
Vanja Marić, Luka Paljk, Lenart Zadnik
We identify the mechanism of slow heterogeneous relaxation in quantum kinetically constrained models (KCMs) in which the potential energy strength is controlled by a coupling param…
Integrability and charge transport in asymmetric quantum-circuit geometries
Chiara Paletta, Urban Duh, Balázs Pozsgay +1
We revisit the integrability of quantum circuits constructed from two-qubit unitary gates that satisfy the Yang-Baxter equation. A brickwork arrangement of typically corres…
Integrability is generic in homogeneous U(1)-invariant nearest-neighbor qubit circuits
Marko Znidaric, Urban Duh, Lenart Zadnik
Integrability is an exceptional property believed to hold only for systems with fine-tuned parameters. Contrary, we explicitly show that in homogeneous nearest-neighbor qubit circu…
Quantum many-body spin ratchets
Lenart Zadnik, Marko Ljubotina, Žiga Krajnik +2
Introducing a class of SU(2) invariant quantum unitary circuits generating chiral transport, we examine the role of broken space-reflection and time-reversal symmetries on spin tra…
Slow heterogeneous relaxation due to constraints in dual XXZ models
Lenart Zadnik, Juan P. Garrahan
With the aim to understand the role of the constraints in the thermalisation of quantum systems, we study the dynamics of a family of kinetically constrained models arising through…
Nonequilibrium symmetry-protected topological order: emergence of semilocal Gibbs ensembles
Maurizio Fagotti, Vanja Marić, Lenart Zadnik
We consider nonequilibrium time evolution in quantum spin chains after a global quench. Usually a nonequilibium quantum many-body system locally relaxes to a (generalised) Gibbs en…
Measurement catastrophe and ballistic spread of charge density with vanishing current
Lenart Zadnik, Saverio Bocini, Kemal Bidzhiev +1
One of the features of many-body quantum systems with Hilbert-space fragmentation is the existence of stationary states manifesting quantum jamming. It was recently shown that thes…
Macroscopic effects of localised measurements in jammed states of quantum spin chains
Kemal Bidzhiev, Maurizio Fagotti, Lenart Zadnik
A quantum jammed state can be seen as a state where the phase space available to particles shrinks to zero, an interpretation quite accurate in integrable systems, where stable qua…
The Folded Spin-1/2 XXZ Model: II. Thermodynamics and Hydrodynamics with a Minimal Set of Charges
Lenart Zadnik, Kemal Bidzhiev, Maurizio Fagotti
We study the (dual) folded spin-1/2 XXZ model in the thermodynamic limit. We focus, in particular, on a class of local macrostates that includes Gibbs ensembles. We develop a therm…
The Folded Spin-1/2 XXZ Model: I. Diagonalisation, Jamming, and Ground State Properties
Lenart Zadnik, Maurizio Fagotti
We study an effective Hamiltonian generating time evolution of states on intermediate time scales in the strong-coupling limit of the spin-1/2 XXZ model. To leading order, it descr…
Rigorous bounds on dynamical response functions and time-translation symmetry breaking
Marko Medenjak, Tomaz Prosen, Lenart Zadnik
Dynamical response functions are standard tools for probing local physics near the equilibrium. They provide information about relaxation properties after the equilibrium state is…
Exact nonequilibrium steady state of open XXZ/XYZ spin-1/2 chain with Dirichlet boundary conditions
Vladislav Popkov, Tomaž Prosen, Lenart Zadnik
We investigate a dissipatively driven XYZ spin-1/2 chain in the Zeno limit of strong dissipation, described by Lindblad master equation. The nonequilibrium steady state is expresse…
Inhomogeneous MPA and exact steady states of boundary driven spin chains at large dissipation
Vladislav Popkov, Tomaž Prosen, Lenart Zadnik
We find novel site-dependent Lax operators in terms of which we demonstrate exact solvability of a dissipatively driven XYZ spin-1/2 chain in the Zeno limit of strong dissipation,…
Ballistic spin transport in a periodically driven integrable quantum system
Marko Ljubotina, Lenart Zadnik, Tomaž Prosen
We demonstrate ballistic spin transport of an integrable unitary quantum circuit, which can be understood either as a paradigm of an integrable periodically driven (Floquet) spin c…
Integrable Trotterization: Local Conservation Laws and Boundary Driving
Matthieu Vanicat, Lenart Zadnik, Tomaž Prosen
We discuss a general procedure to construct an integrable real-time trotterization of interacting lattice models. As an illustrative example we consider a spin- chain, with co…
Quasilocal Conservation Laws in the Quantum Hirota Model
Lenart Zadnik, Tomaz Prosen
Extensivity of conservation laws of the quantum Hirota model on a dimensional lattice is considered. This model can be interpreted in terms of an integrable many-body quantum…
Quasilocal charges in integrable lattice systems
Enej Ilievski, Marko Medenjak, Tomaz Prosen +1
We review recent progress in understanding the notion of locality in integrable quantum lattice systems. The central concept are the so-called quasilocal conserved quantities, whic…
Quasilocal conservation laws from semicyclic irreducible representations of in spin- chains
Lenart Zadnik, Marko Medenjak, Tomaz Prosen
We construct quasilocal conserved charges in the gapless () regime of the Heisenberg spin- chain, using semicyclic irreducible representations of $U_q(\mathfr…