52 citations · 106 across the 11 of their papers we have counts for
14 papers
The Ericson Transition in Time-Reversal Invariant Systems: Symplectically Invariant Hamiltonians
Simon Köhnes, Thomas Guhr
We investigate the distributions of off-diagonal scattering matrix elements and cross-sections in the Ericson regime for time-reversal invariant systems with odd spin. Within the u…
Breaking the Spin Degeneracy for Distributions of Off-Diagonal Scattering Matrix Elements in the Case of Symplectic Symmetry
Nils Gluth, Thomas Guhr
Recently derived exact expressions for the distributions of scattering matrix elements show that all combinations of ingoing and outgoing spin orientations are equally distributed.…
Distribution of Scattering Matrix Elements in the case of Symplectic Symmetry
Nils Gluth, Thomas Guhr
Scattering theory is at the core of gaining information about most quantum systems. In general, analytic progress is difficult and the investigation of universal features using sta…
Extreme Value Analysis for Finite, Multivariate and Correlated Systems with Finance as an Example
Benjamin Köhler, Anton J. Heckens, Thomas Guhr
Extreme values and the tail behavior of probability distributions are essential for quantifying and mitigating risk in complex systems of all kinds. In multivariate settings, accou…
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…
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…
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…
Spatiotemporal statistical features of velocity responses to traffic congestions in a local motorway network
Shanshan Wang, Michael Schreckenberg, Thomas Guhr
The causal connection between congestions and velocity changes at different locations induces various statistical features, which we identify and measure in detail. We carry out an…
How much longer do you have to drive than the crow has to fly?
Shanshan Wang, Henrik M. Bette, Michael Schreckenberg +1
When traveling by car from one location to another, our route is constrained by the road network. The network distance between the two locations is generally longer than the geodet…
Local correlations in partially dual-unitary lattice models
Vladimir Al. Osipov, Niclas Krieger, Thomas Guhr +1
We consider the problem of local correlations in the kicked, dual-unitary coupled maps on D-dimensional lattices. We demonstrate that for D>=2, fully dual-unitary systems exhibit u…
Dynamics of wind turbine operational states
Henrik M. Bette, Christian Wiedemann, Matthias Wächter +3
Modern wind turbines gather a wealth of data with Supervisory Control And Data Acquisition (SCADA) systems. We study the short-term mutual dependencies of a variety of observables…
Observation of Periodic Orbits on Curved Two - dimensional Geometries
M. Avlund, C. Ellegaard, M. Oxborrow +2
We measure elastomechanical spectra for a family of thin shells. We show that these spectra can be described by a "semiclassical" trace formula comprising periodic orbits on geodes…
Superscars in billiards -- A model for doorway states in quantum spectra
S. Åberg, T. Guhr, M. Miski-Oglu +1
In a unifying way, the doorway mechanism explains spectral properties in a rich variety of open mesoscopic quantum systems, ranging from atoms to nuclei. A distinct state and a bac…
Coupled Microwave Billiards as a Model for Symmetry Breaking
H. Alt, C. I. Barbosa, H. -D. Graef +5
Two superconducting microwave billiards have been electromagnetically coupled in a variable way. The spectrum of the entire system has been measured and the spectral statistics ana…