3 papers
math-ph2025
Group-Theoretic Structure Governing Identifiability in Inverse Problems
Isshin Arai, Tomoaki Itano
In physical systems possessing symmetry, reconstructing the underlying causal structure from observational data constitutes an inverse problem of fundamental importance. In this wo…
nlin.CD2025
Nonlinear Aggregation of Phase Elements on the Unit Circle under Parametric External Fields
Isshin Arai, Tomoaki Itano, Masako Sugihara-Seki
We investigate nonlinear aggregation dynamics of phase elements distributed on the unit circle under parametrically modulated external fields. Our model, inspired by flaky particle…
physics.flu-dyn2025
Probabilistic description of flake orientation suspended in rotating wave flows
Tomoaki Itano, Isshin Arai
In fluid dynamics experiments, flake-based flow visualization is a common technique to capture flow structures through the rays reflected from flat tracers suspended in the fluid.…