Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Białous, Małgorzata"'
We investigate experimentally the undirected open microwave network $\Gamma $ with internal absorption composed of two coupled directed halves, unidirectional networks $\Gamma_{+} $ and $\Gamma_{-} $, corresponding to two possible directions of motio
Externí odkaz:
http://arxiv.org/abs/2409.03493
Publikováno v:
Physical Review E 108, 034219 (2023)
We investigate properties of the transmission amplitude of quantum graphs and microwave networks composed of regular polygons such as triangles and squares. We show that for the graphs composed of regular polygons with the edges of the length $l$ the
Externí odkaz:
http://arxiv.org/abs/2402.12925
Autor:
Białous, Małgorzata, Sirko, Leszek
Publikováno v:
Phys. Rev. E 106, 064208 (2022)
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 rectangular microwave flat resonator coupled to microwave power
Externí odkaz:
http://arxiv.org/abs/2301.07214
Autor:
Lawniczak, Michal, Akhshani, Afshin, Farooq, Omer, Bialous, Malgorzata, Bauch, Szymon, Dietz, Barbara, Sirko, Leszek
Publikováno v:
Physical Review E 107, 024203 (2023)
We report on experimental studies of the distribution of the reflection coefficients, and the imaginary and real parts of Wigner's reaction (K) matrix employing open microwave networks with symplectic symmetry and varying size of absorption. The resu
Externí odkaz:
http://arxiv.org/abs/2212.01566
Publikováno v:
Phys. Rev. E 103 (2021), 032208
We investigate experimentally a Fermi golden rule in two-edge and five-edge microwave networks with preserved time reversal invariance. A Fermi golden rule gives rates of decay of states obtained by perturbing embedded eigenvalues of graphs and netwo
Externí odkaz:
http://arxiv.org/abs/2108.05584
Publikováno v:
Phys. Rev. E 103, 052204 (2021)
We report on the experimental investigation of the fluctuation properties in the resonance frequency spectra of a flat resonator simulating a dissipative quantum billiard subject to partial time-reversal invariance violation (TIV) which is induced by
Externí odkaz:
http://arxiv.org/abs/2104.02572
Publikováno v:
Phys. Rev. E 102, 012210 (2020)
We investigated the spectra of resonances of four-vertex microwave networks simulating both quantum graphs with preserved and with partially violated time-reversal invariance before and after an edge switch operation. We show experimentally that unde
Externí odkaz:
http://arxiv.org/abs/2010.15397
Publikováno v:
Physical Review E 102, 042206 (2020)
We report on the experimental investigation of the dependence of the elastic enhancement, i.e., enhancement of scattering in backward direction over scattering in other directions of a wave-chaotic system with partially violated time-reversal (T ) in
Externí odkaz:
http://arxiv.org/abs/2009.13519
Autor:
Ławniczak, Michał, Kurasov, Pavel, Bauch, Szymon, Białous, Małgorzata, Yunko, Vitalii, Sirko, Leszek
Publikováno v:
Physical Review E 101, 052320 (2020)
The Euler characteristic $\chi =|V|-|E|$ and the total length $\mathcal{L}$ are the most important topological and geometrical characteristics of a metric graph. Here, $|V|$ and $|E|$ denote the number of vertices and edges of a graph. The Euler char
Externí odkaz:
http://arxiv.org/abs/2007.10654
Publikováno v:
Phys. Rev. E 98, 01220, 2018
We present an experimental study of missing level statistics of three-dimensional chaotic microwave cavities. The investigation is reinforced by the power spectrum of level fluctuations analysis which also takes into account the missing levels. On th
Externí odkaz:
http://arxiv.org/abs/1903.05198