4 papers
Hermitian and non-Hermitian topology in active matter
Kazuki Sone, Kazuki Yokomizo, Kyogo Kawaguchi +1
Self-propulsion is a quintessential aspect of biological systems, which can induce nonequilibrium phenomena that have no counterparts in passive systems. Motivated by biophysical i…
Transition from topological to chaos in the nonlinear Su-Schrieffer-Heeger model
Kazuki Sone, Motohiko Ezawa, Zongping Gong +3
Recent studies on topological materials are expanding into the nonlinear regime, while the central principle, namely the bulk-edge correspondence, is yet to be elucidated in the st…
Topological pump and its plateau transitions of -leg spin ladder
Kota Yamamoto, Yoshihito Kuno, Tomonari Mizoguchi +2
A topological pump on an leg spin ladder is discussed by introducing spatial clusterization whose adiabatic limit is a set of site staircase clusters. We…
Topological-to-Topological Transition Induced by On-Site Nonlinearity in a One-Dimensional Topological Insulator
Kazuki Sone, Yasuhiro Hatsugai
Recent studies have extended the notion of band topology to nonlinear systems by defining nonlinear counterparts of eigenvalue problems. They have found the nonlinearity-induced to…