Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Yu. A. Kuperin"'
Publikováno v:
European Proceedings of Social and Behavioural Sciences.
Publikováno v:
2018 Days on Diffraction (DD).
We apply two methods (linear spectral analysis and nonlinear multifractal analysis) for analyzing the EEG records for experienced and inexperienced subjects, in meditation and background states. Through comparison of the obtained results, we show tha
Autor:
D. A. Pyatkin, Yu. A. Kuperin
Publikováno v:
Journal of Mathematical Sciences. 128:2798-2802
Some results on the stochastic control of a two-dimensional chaotic map, namely, the baker map, are presented. The approach is based on the probabilistic coupling of the controlled dynamics with a controlling system and the subsequent lifting of the
Publikováno v:
Journal of Physics A: Mathematical and General. 38:4825-4833
The problem of spin-dependent transport of electrons through a finite array of quantum dots attached to a 1D quantum wire (spin gun) for various semiconductor materials is studied. The Breit–Fermi term for spin–spin interaction in the effective H
Autor:
Yu. A. Kuperin, C. B. Levin
Publikováno v:
Theoretical and Mathematical Physics. 118:60-76
We consider the problems of three-particle scattering and annihilation in a system of three strongly interacting charged particles (\(\bar p\)pn). We propose a model for the elastic scattering and the breakup process in the nucleon channel as well as
Publikováno v:
Scopus-Elsevier
Laboratory of the Complex Systems Theory Institute for Physics, St. Petersburg State University St. Petersburg, 198904, Russia Abstract--The exact expressions for scattering length and partial total cross-section for l~n and l~p systems are obtained
Publikováno v:
Scopus-Elsevier
The relation of the quantum 1D three-body problems with zero-range interaction to the matrix Riemann-Hilbert problem with meromorphic coefficient is shown. The solution of this problem is discussed using the exact analytic diagonalization of the coef
Autor:
Yu. A. Kuperin, Evgeny Yarevsky
Publikováno v:
Hyperfine Interactions. :517-520
Effective optical potentials of antiproton-deuteron, triton and3He interaction are constructed on the basis of few-body nuclei wave functions. Energy shifts for these potentials are calculated for the ¯pd, ¯pt and ¯p3He systems.
Publikováno v:
Il Nuovo Cimento A. 107:2823-2835
An extension of the generalized string-flip model on the spin-spin interaction is suggested. Compact integral equations for restricted Green’s function and partialS-matrices are derived. By means of the extension theory for symmetric operators, add
Publikováno v:
Physics Letters A. 194:59-63
Two exactly solvable models illustrating the links between spectral properties of Hamiltonians, connections on the induced Hilbert bundles and topological characteristics of the basis spaces are considered. The first of them is based on the extension