We present experimental studies of the power spectrum and other fluctuation properties in
the spectra of microwave networks simulating chaotic quantum graphs with violated time …

Modern electronic systems operate in complex electromagnetic environments and must
handle noise and unwanted coupling. The capability to isolate or reject unwanted signals for …

We present experimental and theoretical results for the fluctuation properties in the
incomplete spectra of quantum systems with symplectic symmetry and a chaotic dynamics in …

The power spectrum analysis of spectral fluctuations in complex wave and quantum systems
has emerged as a useful tool for studying their internal dynamics. In this paper, we formulate …

The Euler characteristic χ=| V|−| E| and the total length L are the most important topological
and geometrical characteristics of a metric graph. Here| V| and| E| denote the number of …

We investigated the spectra of resonances of four-vertex microwave networks simulating
both quantum graphs with preserved and with partially violated time-reversal invariance …

We investigated properties of a singular billiard, that is, a quantum billiard which contains a
pointlike (zero-range) perturbation. A singular billiard was simulated experimentally by a …

Triggered by a controversy surrounding a universal behavior of the power spectrum in
quantum systems exhibiting regular classical dynamics, we focus on a model of random …

We report on the experimental investigation of the dependence of the elastic enhancement,
ie, enhancement of scattering in the backward direction over scattering in other directions, of …

The spectral fluctuations of complex quantum systems, in an appropriate limit, are known to
be consistent with those obtained from random matrices. However, this relation between the …