Zobrazeno 1 - 10
of 566
pro vyhledávání: '"Wigner Smith"'
Autor:
Byrnes, Niall, Foreman, Matthew R.
Perturbing resonant systems causes shifts in their associated scattering poles in the complex plane. In a previous study [arXiv: 2408.11360], we demonstrated that these shifts can be calculated numerically by analyzing the residue of a generalized Wi
Externí odkaz:
http://arxiv.org/abs/2410.19357
Autor:
Byrnes, Niall, Foreman, Matthew R.
Resonances of open non-Hermitian systems are associated with the poles of the system scattering matrix. Perturbations of the system cause these poles to shift in the complex frequency plane. In this work, we introduce a novel method for calculating s
Externí odkaz:
http://arxiv.org/abs/2408.11360
The Wigner-Smith (WS) time delay matrix relates an electromagnetic system's scattering matrix and its frequency derivative. Previous work showed that the entries of WS time delay matrices of systems excited by propagating waves consist of volume inte
Externí odkaz:
http://arxiv.org/abs/2206.02571
The Wigner-Smith (WS) time delay matrix relates a system's scattering matrix to its frequency derivative and gives rise to so-called WS modes that experience well-defined group delays when interacting with the system. For systems composed of nondispe
Externí odkaz:
http://arxiv.org/abs/2206.01403
The Wigner-Smith (WS) time delay matrix relates an acoustic system's scattering matrix to its wavenumber derivative. The entries of the WS time delay matrix can be expressed in terms of energy density-like volume integrals, which cannot be efficientl
Externí odkaz:
http://arxiv.org/abs/2205.12725
The Wigner-Smith (WS) time delay matrix relates a lossless system's scattering matrix to its frequency derivative. First proposed in the realm of quantum mechanics to characterize time delays experienced by particles during a collision, this article
Externí odkaz:
http://arxiv.org/abs/2205.07347
Autor:
Grabsch, Aurélien, Texier, Christophe
Publikováno v:
J. Phys. A : Math. Theor. 53, 425003 (2020)
We consider a multichannel wire with a disordered region of length $L$ and a reflecting boundary. The reflection of a wave of frequency $\omega$ is described by the scattering matrix $\mathcal{S}(\omega)$, encoding the probability amplitudes to be sc
Externí odkaz:
http://arxiv.org/abs/2002.12077
Autor:
Patel, Utkarsh R., Michielssen, Eric
Publikováno v:
IEEE Trans. on Antennas \& Propag., vol. 69, no. 2, Feb. 2021
Wigner-Smith (WS) time delay concepts have been used extensively in quantum mechanics to characterize delays experienced by particles interacting with a potential well. This paper formally extends WS time delay theory to Maxwell's equations and explo
Externí odkaz:
http://arxiv.org/abs/2003.06985
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