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Spectral properties of microwave graphs with local absorption
M. Allgaier, S. Gehler, S. Barkhofen +2
The influence of absorption on the spectra of microwave graphs has been studied experimentally. The microwave networks were made up of coaxial cables and T junctions. First, absorp…
Formation and interaction of resonance chains in the open 3-disk system
T. Weich, S. Barkhofen, U. Kuhl +2
In ballistic open quantum systems one often observes that the resonances in the complex-energy plane form a clear chain structure. Taking the open 3-disk system as a paradigmatic m…
Experimental Observation of a Fundamental Length Scale of Waves in Random Media
S. Barkhofen, J. Metzger, R. Fleischmann +2
Waves propagating through a weakly scattering random medium show a pronounced branching of the flow accompanied by the formation of freak waves, i.e., extremely intense waves. Theo…
Tight-binding couplings in microwave artificial graphene
Matthieu Bellec, Ulrich Kuhl, Gilles Montambaux +1
We experimentally study the propagation of microwaves in an artificial honeycomb lattice made of dielectric resonators. This evanescent propagation is well described by a tight-bin…
Schematic baryon models, their tight binding description and their microwave realization
E. Sadurní, J. A. Franco-Villafañe, U. Kuhl +2
A schematic model for baryon excitations is presented in terms of a symmetric Dirac gyroscope, a relativistic model solvable in closed form, that reduces to a rotor in the non-rela…
First experimental realization of the Dirac oscillator
J. A. Franco-Villafañe, E. Sadurní, S. Barkhofen +3
We present the first experimental microwave realization of the one-dimensional Dirac oscillator, a paradigm in exactly solvable relativistic systems. The experiment relies on a rel…