Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Mierzejewski, Marcin"'
We study tilted chains of spinless fermions in the presence of the nearest-neighbor density-density interaction for which the noninteracting counterpart displays Stark localization. We demonstrate that the latter two-body interaction can be decompose
Externí odkaz:
http://arxiv.org/abs/2409.18484
The dynamics of disordered two-dimensional systems is much less understood than the dynamics of disordered chains, mainly due to the lack of appropriate numerical methods. We demonstrate that a single-trajectory version of the fermionic truncated Wig
Externí odkaz:
http://arxiv.org/abs/2409.12956
Eigenstate thermalization has been shown to occur for few-body observables in a wide range of nonintegrable interacting models. For intensive observables that are sums of local operators, because of their polynomially vanishing Hilbert-Schmidt norm,
Externí odkaz:
http://arxiv.org/abs/2404.02199
We investigate chains of interacting spinless fermions subject to a finite external field $F$ (also called Stark chains) and focus on the regime where the charge thermalization follows the subdiffusive hydrodynamics. First, we study reduced models co
Externí odkaz:
http://arxiv.org/abs/2403.18906
Hilbert space fragmentation is an ergodicity breaking phenomenon, in which Hamiltonian shatters into exponentially many dynamically disconnected sectors. In many fragmented systems, these sectors can be labelled by statistically localized integrals o
Externí odkaz:
http://arxiv.org/abs/2401.17097
Autor:
Bonca, Janez, Mierzejewski, Marcin
Publikováno v:
Phys. Rev. B 105, 155146 (2022)
We discuss the interplay between many-body localization and spin-symmetry. To this end, we study the time evolution of several observables in the anisotropic t-J model. Like the Hubbard chain, the studied model contains charge and spin degrees of fre
Externí odkaz:
http://arxiv.org/abs/2302.14568
Publikováno v:
Phys. Rev. B 106, 014201 (2022)
We study sample-to-sample fluctuations of the gap ratio in the energy spectra in finite disordered spin chains. The chains are described by the random-field Ising model and the Heisenberg model. We show that away from the ergodic/nonergodic crossover
Externí odkaz:
http://arxiv.org/abs/2301.11132
Publikováno v:
Phys. Rev. Lett. 131, 060401 (2023)
Thermalization (generalized thermalization) in nonintegrable (integrable) quantum systems requires two ingredients: equilibration and agreement with the predictions of the Gibbs (generalized Gibbs) ensemble. We prove that observables that exhibit eig
Externí odkaz:
http://arxiv.org/abs/2210.00016
Using the truncated Wigner approximation (TWA) we study quench dynamics of two-dimensional lattice systems consisting of interacting spinless fermions with potential disorder. First, we demonstrate that the semiclassical dynamics generally relaxes fa
Externí odkaz:
http://arxiv.org/abs/2209.15062
Publikováno v:
Phys. Rev. Lett. 127, 230603 (2021)
Studies of disordered spin chains have recently experienced a renewed interest, inspired by the question to which extent the exact numerical calculations comply with the existence of a many-body localization phase transition. For the paradigmatic ran
Externí odkaz:
http://arxiv.org/abs/2105.09336