Zobrazeno 1 - 10
of 301
pro vyhledávání: '"Vidmar L"'
Publikováno v:
J. Phys. A: Math. Theor. 57 495003 (2024)
Quasicondensation in one dimension is known to occur for equilibrium systems of hard-core bosons (HCBs) at zero temperature. This phenomenon arises due to the off-diagonal long-range order in the ground state, characterized by a power-law decay of th
Externí odkaz:
http://arxiv.org/abs/2401.16860
Publikováno v:
Phys. Rev. B 108, 064203 (2023)
The random-field spin-1/2 XXZ chains, and the corresponding Anderson insulators of spinless fermions with density-density interaction, have been intensively studied in the context of many-body localization. However, we recently argued [B. Krajewski e
Externí odkaz:
http://arxiv.org/abs/2306.14613
Publikováno v:
Phys. Rev. E 107, 064119 (2023)
To which degree the average entanglement entropy of midspectrum eigenstates of quantum-chaotic interacting Hamiltonians agrees with that of random pure states is a question that has attracted considerable attention in the recent years. While there is
Externí odkaz:
http://arxiv.org/abs/2303.13577
Publikováno v:
Phys. Rev. Lett. 129, 260601 (2022)
We consider a chain of interacting fermions with random disorder that was intensively studied in the context of many-body localization. We show that only a small fraction of the two-body interaction represents a true local perturbation to the Anderso
Externí odkaz:
http://arxiv.org/abs/2209.00661
Publikováno v:
Phys. Rev. B 103, 235137 (2021)
Matrix elements of observables in eigenstates of generic Hamiltonians are described by the Srednicki ansatz within the eigenstate thermalization hypothesis (ETH). We study a quantum chaotic spin-fermion model in a one-dimensional lattice, which consi
Externí odkaz:
http://arxiv.org/abs/2011.13958
Publikováno v:
Phys. Rev. E 102, 062144 (2020)
Characterizing states of matter through the lens of their ergodic properties is a fascinating new direction of research. In the quantum realm, the many-body localization (MBL) was proposed to be the paradigmatic ergodicity breaking phenomenon, which
Externí odkaz:
http://arxiv.org/abs/1905.06345
Publikováno v:
Journal of Physics A: Mathematical & Theoretical; 12/6/2024, Vol. 57 Issue 49, p1-36, 36p
Publikováno v:
In Annals of Physics December 2021 435 Part 2
Publikováno v:
Phys. Rev. X 7, 021012 (2017)
The quantum dynamics of interacting many-body systems has become a unique venue for the realization of novel states of matter. Here we unveil a new class of nonequilibrium states that are eigenstates of an emergent local Hamiltonian. The latter is ex
Externí odkaz:
http://arxiv.org/abs/1512.05373
Publikováno v:
Phys. Rev. B 94, 014304 (2016)
We analyze the thermalization of a photoexcited charge carrier coupled to a single branch of quantum phonons within the Holstein model. To this end, we calculate the far-from-equilibrium time evolution of a pure many-body state and compare it with pr
Externí odkaz:
http://arxiv.org/abs/1509.08431