Research output: Contribution to journal › Article › peer-review
Introducing phase jump tracking - a fast method for eigenvalue evaluation of the direct Zakharov-Shabat problem. / Chekhovskoy, Igor; Medvedev, S. B.; Vaseva, I. A. et al.
In: Communications in Nonlinear Science and Numerical Simulation, Vol. 96, 105718, 05.2021.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Introducing phase jump tracking - a fast method for eigenvalue evaluation of the direct Zakharov-Shabat problem
AU - Chekhovskoy, Igor
AU - Medvedev, S. B.
AU - Vaseva, I. A.
AU - Sedov, E. V.
AU - Fedoruk, M. P.
N1 - Funding Information: Russian Science Foundation (RSF) (17-72-30006). The work of I.S.Ch. was supported by the state funding program FSUS-2020-0034. Publisher Copyright: © 2021 Elsevier B.V. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/5
Y1 - 2021/5
N2 - We propose a new method for finding discrete eigenvalues for the direct Zakharov-Shabat problem, based on moving in the complex plane along the argument jumps of the function a(ζ), the localization of which does not require great accuracy. It allows to find all discrete eigenvalues taking into account their multiplicity faster than matrix methods and contour integrals. The method shows significant advantage over other methods when calculating a large discrete spectrum, both in speed and accuracy.
AB - We propose a new method for finding discrete eigenvalues for the direct Zakharov-Shabat problem, based on moving in the complex plane along the argument jumps of the function a(ζ), the localization of which does not require great accuracy. It allows to find all discrete eigenvalues taking into account their multiplicity faster than matrix methods and contour integrals. The method shows significant advantage over other methods when calculating a large discrete spectrum, both in speed and accuracy.
KW - Direct scattering transform
KW - Nonlinear fourier transform
KW - Nonlinear schrödinger equation
KW - Zakharov-Shabat problem
UR - http://www.scopus.com/inward/record.url?scp=85100030737&partnerID=8YFLogxK
UR - https://elibrary.ru/item.asp?id=44976729
U2 - 10.1016/j.cnsns.2021.105718
DO - 10.1016/j.cnsns.2021.105718
M3 - Article
AN - SCOPUS:85100030737
VL - 96
JO - Communications in Nonlinear Science and Numerical Simulation
JF - Communications in Nonlinear Science and Numerical Simulation
SN - 1007-5704
M1 - 105718
ER -
ID: 27692723