mountebank
发表于 2025-3-21 18:10:56
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aspect
发表于 2025-3-21 20:37:02
Transport in Locally Perturbed Tubes,es with the energy below that of the incident particle. Resonances in such systems are of particular interest. They may arise from a violation of a symmetry preventing passages between certain transverse modes. They may appear also in other situations, for instance, in thin bent tubes where they are
extrovert
发表于 2025-3-22 02:18:15
More About the Waveguide Spectra,binding energies. They also exist in higher dimensions and for other type of boundaries. Even in acoustic waveguides one can find localized solutions but their energies are embedded in the continuum and a particular symmetry is required; its violation leads to the emergence of resonances. Also many-
Patrimony
发表于 2025-3-22 07:13:04
Dirichlet Layers,ed suitable conditions are satisfied, for instance, non-positivity of the total Gauss curvature, a sufficiently small layer thickness, or a cylindrical symmetry, yet another sufficient condition is a topological nontriviality of the generating surface. Other mechanisms, such as a lateral coupling of
纵欲
发表于 2025-3-22 11:11:39
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Monolithic
发表于 2025-3-22 14:03:58
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古董
发表于 2025-3-22 20:08:09
External Fields and Magnetic Transport,e of magnetic fields opens even more possibilities. Local magnetic fields lead to a Hardy-type inequality which can prevent binding. A homogeneous magnetic field can, for instance, destroy a particular symmetry and produce thus resonance states. More important, it can also induce transport in the fo
原谅
发表于 2025-3-22 23:06:31
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Creatinine-Test
发表于 2025-3-23 04:48:19
Periodic and Random Systems,res. This is discussed here for the particular case of a periodically curved waveguide. It does not exhaust interesting features of such systems: the spectral structure is discussed in the example of periodic point perturbations of tubes and layers, also in presence of a magnetic field. On the other
Glossy
发表于 2025-3-23 06:16:30
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