3 papers
quant-ph2025
Experimental study of the distributions of off-diagonal scattering-matrix elements of quantum graphs with symplectic symmetry
Jiongning Che, Nils Gluth, Simon Köhnes +2
We report on experimental studies of the distribution of the off-diagonal elements of the scattering matrix of open microwave networks with symplectic symmetry and a chaotic wave d…
cond-mat.stat-mech2025
Exact Results for the Ericson Transition in Stochastic Quantum Scattering and Experimental Validation
Simon Köhnes, Jiongning Che, Barbara Dietz +1
At lower energies, the resonances in scattering experiments are often isolated. The crucial parameter is the ratio of average resonance width and average mean level spacing. Toward…
q-fin.ST2024
Multivariate Distributions in Non-Stationary Complex Systems I: Random Matrix Model and Formulae for Data Analysis
Efstratios Manolakis, Anton J. Heckens, Benjamin Köhler +1
Risk assessment for rare events is essential for understanding systemic stability in complex systems. As rare events are typically highly correlated, it is important to study heavy…