Titlebook: Jost Functions in Quantum Mechanics; A Unified Approach t Sergei A. Rakityansky Book 2022 The Editor(s) (if applicable) and The Author(s),

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Riemann Surfaces for Multi-Channel Systemsmatrices depend on . via all the channel momenta. For a fixed value of ., the Jost matrices have many different values and therefore are defined on a multi-layered Riemann surface. A detailed analysis of the topology of this surface is given in the present chapter. It is also derived here a general

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Multi-channel Problems of Charged Particlesfrom which we started at the beginning of the book is completed here by including the Coulomb forces in the theory. The presentation of this most general case is based on all the preceding chapters. Some of the proofs and derivations are therefore not repeated. Instead, we just explain how the more

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Effective-Range Expansion and Its Generalizations done in two directions: firstly, we can do the expansion not only around the point .?=?0, but near an arbitrary energy on the Riemann surface; secondly, we can extend the method for an arbitrary number of channels. Furthermore, the expansion coefficients can either be calculated or can be fitted to

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Singular and Low-Dimensional Potentials here how the problems involving singular potentials as well as the one- and two-dimensional problems can be approached on the same basis (i.e., using the Jost matrices) but with some necessary modifications and with the help of some special tricks.

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Sergei A. Rakityanskyhinen unterschieden werden..Bei den feststehenden sind insbesondere Transformatoren von Interesse, die als ein oder dreiphasiges System ausgelegt werden. Die Modellierung kann trotz geringer Jochtiefe im zwei-dimensionalen Raum erfolgen. Zus?tzlich sind die Schaltungselemente zu berücksichtigen, die

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Sergei A. Rakityanskylosely cooperating with Spring manufacturers.Includes suppleThe Japanese original edition of "FEM for Springs" was published in 1997, to com- memorate the 50th anniversary of Japan Society for Spring Research (JSSR). While there have been many books published about Finite Element Method (FEM), this

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