30 citations · 89 across the 6 of their papers we have counts for
28 papers
Topological pump and bulk-edge-correspondence in an extended Bose-Hubbard model
Yoshihito Kuno, Yasuhiro Hatsugai
An extended Bose-Hubbard model (EBHM) with three- and four-body constraints can be feasible in cold atoms in an optical lattice. A rich phase structure including various symmetry-p…
Interplay and competition between disorder and flat band in an interacting Creutz ladder
Takahiro Orito, Yoshihito Kuno, Ikuo Ichinose
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, t…
Multiple quantum scar states and emergent slow-thermalization in the flat-band system
Yoshihito Kuno, Tomonari Mizoguchi, Yasuhiro Hatsugai
Quantum many-body scars (QMBS) appear in a flat-band model with interactions on the saw-tooth lattice. The flat-band model includes a compact support localized eigenstates, called…
Square-root topological phase with time-reversal and particle-hole symmetry
Tsuneya Yoshida, Tomonari Mizoguchi, Yoshihito Kuno +1
Square-root topological phases have been discussed mainly for systems with chiral symmetry. In this paper, we analyze the topology of the squared Hamiltonian for systems preserving…
Flat band, spin-1 Dirac cone, and Hofstadter diagram in the fermionic square kagome model
Tomonari Mizoguchi, Yoshihito Kuno, Yasuhiro Hatsugai
We study characteristic band structures of the fermions on a square kagome lattice, one of the two-dimensional lattices hosting a corner-sharing network of triangles. We show that…
Flat-band full localization and symmetry-protected topological phase on bilayer lattice systems
Ikuo Ichinose, Takahiro Orito, Yoshihito Kuno
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 ar…