1.4k citations · 7.1k across the 161 of their papers we have counts for
161 papers
Blocking particle dynamics in diamond chain with spatially increasing flux
Tomonari Mizoguchi, Yoshihito Kuno, Yasuhiro Hatsugai
Spatial non-uniformity in tight-binding models serves as a source of rich phenomena. In this paper, we study a diamond-chain tight-binding model with a spatially-modulated magnetic…
symmetry and Berry phase of bosonic ladder
Yoshihito Kuno, Yasuhiro Hatsugai
Bose gas on a two-leg ladder exhibits an interesting topological phase. We show the presence of a bosonic symmetry-protected-topological (SPT) phase protected by sy…
Higher-order topological heat conduction on a lattice for detection of corner states
T. Fukui, T. Yoshida, Y. Hatsugai
A heat conduction equation on a lattice composed of nodes and bonds is formulated assuming the Fourier law and the energy conservation law. Based on this equation, we propose a hig…
A symmetry-protected exceptional ring in a photonic crystal with negative index media
Takuma Isobe, Tsuneya Yoshida, Yasuhiro Hatsugai
Non-Hermitian topological band structures such as symmetry-protected exceptional rings (SPERs) can emerge for systems described by the generalized eigenvalue problem (GEVP) with He…
Fate of exceptional points under interactions: Reduction of topological classifications
Tsuneya Yoshida, Yasuhiro Hatsugai
Despite recent extensive studies of the non-Hermitian topology, understanding interaction effects is left as a crucial question. In this paper, we address interaction effects on ex…
Topological pump of quantum chain and Diophantine equation
Yasuhiro Hatsugai, Yoshihito Kuno
A topological pump of the quantum chain is proposed associated with a current due to a local gauge invariance of colored fermions. The invarian…