Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Ikuo Ichinose"'
Publikováno v:
New Journal of Physics, Vol 24, Iss 7, p 073019 (2022)
Novel cluster spin model with interactions and disorder is introduced and studied. In specific type of interactions, we find an extensive number of local integrals of motions (LIOMs), which are a modified version of the stabilizers in quantum informa
Externí odkaz:
https://doaj.org/article/1642e38a2e64447ba03ef3d3e649713f
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-13 (2018)
Abstract The Dirac fermion is an important fundamental particle appearing in high-energy physics and topological insulator physics. In particular, a Dirac fermion in a one-dimensional lattice system exhibits the essential properties of topological ph
Externí odkaz:
https://doaj.org/article/f88c67be2f73486c92b9e2481aab6673
Publikováno v:
New Journal of Physics, Vol 22, Iss 1, p 013032 (2020)
We study disorder-free many-body localization in the flat-band Creutz ladder, which was recently realized in cold-atoms in an optical lattice. In a non-interacting case, the flat-band structure of the system leads to a Wannier wavefunction localized
Externí odkaz:
https://doaj.org/article/6c8f2304dadc47dc814b86db005f9d13
Publikováno v:
New Journal of Physics, Vol 20, Iss 8, p 083006 (2018)
In this paper, we study the nonequilibrium dynamics of the Bose–Hubbard model with the nearest-neighbor repulsion by using time-dependent Gutzwiller (GW) methods. In particular, we vary the hopping parameters in the Hamiltonian as a function of tim
Externí odkaz:
https://doaj.org/article/ecbe9144e4ed408d9da24856c881ec94
Publikováno v:
New Journal of Physics, Vol 19, Iss 12, p 123025 (2017)
In this paper, we study a one-dimensional boson system in a superlattice potential. This system is experimentally feasible by using ultracold atomic gases, and attracts much attention these days. It is expected that the system has a topological phase
Externí odkaz:
https://doaj.org/article/50f724ebccf745b9b8932a7ca58b0d03
Publikováno v:
New Journal of Physics, Vol 17, Iss 6, p 063005 (2015)
Lattice gauge theory has provided a crucial non-perturbative method in studying canonical models in high-energy physics such as quantum chromodynamics. Among other models of lattice gauge theory, the lattice gauge–Higgs model is a quite important o
Externí odkaz:
https://doaj.org/article/ebcf1b40547c4a31a65ece8a4bd01100
Publikováno v:
New Journal of Physics, Vol 16, Iss 8, p 083030 (2014)
In this paper, we study the effect of a random quenched external field for spin order and also multiple Bose–Einstein condensation (BEC). This system is realized by the cold atomic gases in an optical lattice. In particular, we are interested in th
Externí odkaz:
https://doaj.org/article/b6576da7ada14d3d91b83e91a7f195ee
Publikováno v:
Physical Review A. 106
Tripartite mutual information (TMI) is an efficient observable to quantify the ability of scrambler for unitary time-evolution operator with quenched many-body Hamiltonian. In this paper, we give numerical demonstrations of the TMI in disorder-free (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f646aaa49d8ece1afee6c755f18853f
https://doi.org/10.1103/physreva.106.012435
https://doi.org/10.1103/physreva.106.012435
Quantum information spreading and scrambling in many-body systems attract interests these days. Tripartite mutual information (TMI) based on operator-based entanglement entropy (EE) is an efficient tool for measuring them. In this paper, we study ran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f25035ba05e534982f68a0c98ac88f2
http://arxiv.org/abs/2205.03008
http://arxiv.org/abs/2205.03008
Publikováno v:
Physical Review B. 105
We numerically study the random-hopping fermions (the Cruetz ladder) with repulsion and investigate how the interactions deform localized eigenstates by means of the one particle-density matrix (OPDM). The ground state exhibits resurgence of localiza
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b255dad50325d2cf0bd1c2a78959dba5
https://doi.org/10.1103/physrevb.105.094201
https://doi.org/10.1103/physrevb.105.094201