Zobrazeno 1 - 10
of 243
pro vyhledávání: '"Motrunich, Olexei"'
An integrable model perturbed by special ''weak integrability-breaking'' perturbations thermalizes at timescales much longer than predicted by Fermi's golden rule. Recently, a systematic construction of such perturbations based on the so-called long-
Externí odkaz:
http://arxiv.org/abs/2406.08730
In this work, we report first exact volume-entangled Einstein-Podolsky-Rosen (EPR) type scar states hosted by PXP and related Hamiltonians corresponding to various geometric configurations of Rydberg-blockaded atom systems, including the most extensi
Externí odkaz:
http://arxiv.org/abs/2403.05515
Publikováno v:
PRX Quantum 5, 040330 (2024)
Symmetry algebras of quantum many-body systems with locality can be understood using commutant algebras, which are defined as algebras of operators that commute with a given set of local operators. In this work, we show that these symmetry algebras c
Externí odkaz:
http://arxiv.org/abs/2309.15167
Two-dimensional time-reversal-invariant topological superconductors host helical Majorana fermions at their boundary. We study the fate of these edge states under the combined influence of strong interactions and disorder, using the effective 1D latt
Externí odkaz:
http://arxiv.org/abs/2308.03836
Publikováno v:
PRX Quantum 5, 010317 (2024)
Integrable models are characterized by the existence of stable excitations that can propagate indefinitely without decaying. This includes multi-magnon bound states in the celebrated XXZ spin chain model and its integrable Floquet counterpart. A rece
Externí odkaz:
http://arxiv.org/abs/2307.11164
Publikováno v:
Phys. Rev. B 109, 014406 (2024)
We investigate the effect that spatially modulated continuous conserved quantities can have on quantum ground states. We do so by introducing a family of one-dimensional local quantum rotor and bosonic models which conserve finite Fourier momenta of
Externí odkaz:
http://arxiv.org/abs/2307.08761
Publikováno v:
Phys. Rev. Research 5, 043019 (2023)
A quantum integrable system slightly perturbed away from integrability is typically expected to thermalize on timescales of order $\tau\sim \lambda^{-2}$, where $\lambda$ is the perturbation strength. We here study classes of perturbations that viola
Externí odkaz:
http://arxiv.org/abs/2302.12804
Publikováno v:
Phys. Rev. B 107, 224312 (2023)
For families of Hamiltonians defined by parts that are local, the most general definition of a symmetry algebra is the commutant algebra, i.e., the algebra of operators that commute with each local part. Thinking about symmetry algebras as commutant
Externí odkaz:
http://arxiv.org/abs/2302.03028
We study Quantum Many-Body Scars (QMBS) in the language of commutant algebras, which are defined as symmetry algebras of families of local Hamiltonians. This framework explains the origin of dynamically disconnected subspaces seen in models with exac
Externí odkaz:
http://arxiv.org/abs/2209.03377
Publikováno v:
Annals of Physics, Volume 455, August 2023, 169384
In this work, we revisit several families of standard Hamiltonians that appear in the literature and discuss their symmetries and conserved quantities in the language of commutant algebras. In particular, we start with families of Hamiltonians define
Externí odkaz:
http://arxiv.org/abs/2209.03370