Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Takahiro Orito"'
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:
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:
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
Autor:
Takahiro Orito, Ken-Ichiro Imura
Publikováno v:
Physical Review B. 105
Non-Hermiticity and dephasing, collaborating in an unusual wave packet dynamics, realizes unconventional entanglement evolution in a disordered, interacting and asymmetric (non-reciprocal) quantum medium. Taking the Hatano-Nelson model as a concrete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05452e70e82a371e8955cc56f171a6e3
https://doi.org/10.1103/physrevb.105.024303
https://doi.org/10.1103/physrevb.105.024303
Chaotic transverse-field Ising model with measurements exhibits interesting purification dynamics. Ensemble of non-unitary dynamics of a chaotic many-body system with measurements exhibits a purification phase transition. We numerically find that the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a2b9152d7103f761705358b221b55a0
We clarify the interplay and competition between disorder and flat band in the Creutz ladder with inter-particle interactions focusing on the system's dynamics. Without disorder, the Creutz ladder exhibits flat-band many-body localization (FMBL). In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0611a850434109f768ce64012a5b25b7
http://arxiv.org/abs/2106.15385
http://arxiv.org/abs/2106.15385
Autor:
Ken-Ichiro Imura, Takahiro Orito
Many-body localization (MBL) is well characterized in Fock space. To quantify the degree of this Fock space localization, the multifractal dimension $D_q$ is employed; it has been claimed that $D_q$ shows a jump from the delocalized value $D_q=1$ in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fc24e7ca23293bcb4318d055aec4b38
http://arxiv.org/abs/2104.09156
http://arxiv.org/abs/2104.09156
In this work, we present bilayer flat-band Hamiltonians, in which all bulk states are localized and specified by extensive local integrals of motion (LIOMs). The present systems are bilayer extension of Creutz ladder, which is studied previously. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61cd3ad20c5e0708bd462a23203facba