3 papers
physics.plasm-ph2026
von Neumann entropy of phase space structures in gyrokinetic plasma turbulence
Go Yatomi, Motoki Nakata
We introduce a data-driven diagnostic that combines the singular value decomposition (SVD) with an information-theoretic entropy to quantify the phase-space complexity of perturbed…
nlin.CD2025
Landscape computations for the edge of chaos in nonlinear dynamical systems
Motoki Nakata, Masaaki Imaizumi
We propose a stochastic sampling approach to identify stability boundaries in general dynamical systems. The global landscape of Lyapunov exponent in multi-dimensional parameter sp…
physics.flu-dyn2024
Convergence study of multi-field singular value decomposition for turbulence fields
Go Yatomi, Motoki Nakata
Convergence of a matrix decomposition technique, the multi-field singular value decomposition (MFSVD) which efficiently analyzes nonlinear correlations by simultaneously decomposin…