5 papers
Out-of-time-ordered correlators for turbulent fields: a quantum-classical correspondence
Motoki Nakata
An extended formulation of out-of-time-ordered correlators (OTOCs), which quantify noncommutative operator growth and information scrambling in quantum many-body systems, is develo…
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…
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…
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…
Quantum-inspired information entropy in multi-field turbulence
Go Yatomi, Motoki Nakata
A novel information entropy of turbulence systems with multiple field quantities is formulated. Inspired by quantum mechanics, the von Neumann entropy (vNE) and the entanglement en…