Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Evgeny Yarevsky"'
Publikováno v:
Communications in Computational Physics. 30:255-287
The computational approach for solving the Faddeev-Merkuriev equations in total orbital momentum representation is presented. These equations describe a system of three quantum charged particles and are widely used in bound state and scattering calcu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3723ff3620834ca73c702752b0cf0744
https://doi.org/10.4208/cicp.oa-2020-0097
https://doi.org/10.4208/cicp.oa-2020-0097
Publikováno v:
JETP Letters. 114:11-17
We apply a new highly efficient method of solving Faddeev–Merkuriev equations to multi-channel scattering calculations of the antihydrogen formation cross section for antiproton scattering off the ground and excited states of the positronium. Our r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51eeeab9574a05da81a9fbf9b8e4a5bd
https://doi.org/10.1134/s0021364021130026
https://doi.org/10.1134/s0021364021130026
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 85:560-564
Results are presented from calculating the spectra of weakly-bound triatomic molecular systems: the Helium trimer and helium–helium alkali molecules. Calculations are made on the basis of the Faddeev equations in the total orbital momentum represen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51a81ed8728dc3705eb14494820193f4
https://doi.org/10.3103/s1062873821050099
https://doi.org/10.3103/s1062873821050099
Autor:
V. A. Timoshenko, Evgeny Yarevsky
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 85:565-568
Solving a quantum few-body problem with weak interaction is a complicated task. A procedure for discrete variable representation is developed and applied, allowing the period of calculation to be reduced with no loss of accuracy.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e1275aecb7c908e446485d3a071494d
https://doi.org/10.3103/s1062873821050221
https://doi.org/10.3103/s1062873821050221
Publikováno v:
Recent Progress in Few-Body Physics ISBN: 9783030323561
We solve the three-particle multichannel Coulomb scattering problem with rearrangement channels without partial wave decomposition on the base of Faddeev-Merkuriev equations. Highly efficient numerical approach allowed us to perform the detailed calc
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https://explore.openaire.eu/search/publication?articleId=doi_________::6613709c4c879c2659692ac2fc190c3b
https://doi.org/10.1007/978-3-030-32357-8_5
https://doi.org/10.1007/978-3-030-32357-8_5
Autor:
Vladimir Timoshenko, Evgeny Yarevsky
Publikováno v:
Recent Progress in Few-Body Physics ISBN: 9783030323561
Significant computational resources are necessary to calculate bound and resonance states of weakly bound systems with high accuracy. The discrete-variable representation method allows to reduce the computational complexity of determining the matrix
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4345b36865fc2ca7f6885fae0965ee51
https://doi.org/10.1007/978-3-030-32357-8_11
https://doi.org/10.1007/978-3-030-32357-8_11
Publikováno v:
Recent Progress in Few-Body Physics ISBN: 9783030323561
In order to describe few-body scattering in the case of the Coulomb interaction, an approach based on splitting the reaction potential into a finite range part and a long range tail part is presented. The resulting driven Schrodinger equation with as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51a513ecbdd6031720768b187436a7a4
https://doi.org/10.1007/978-3-030-32357-8_12
https://doi.org/10.1007/978-3-030-32357-8_12
Publikováno v:
Theoretical and Mathematical Physics. 195:874-885
We consider a multichannel scattering problem in an adiabatic representation. We assume that the nonadiabatic coupling matrix has a nontrivial value at large internuclear separations, and we construct asymptotic solutions at large internuclear distan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b0e63740e87f0ae8ada396c8972ffbf
https://doi.org/10.1134/s0040577918060065
https://doi.org/10.1134/s0040577918060065
Autor:
V. A. Gradusov, Evgeny Yarevsky
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 80:911-915
A theoretical study of the 0+ resonance states of the 12С nucleus is performed using the 3α cluster model. Various phenomenological potentials are used to characterize the interaction between alpha particles. The results from calculations with diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d78ea4e4ab07c59bd4bf56f4428fa51
https://doi.org/10.3103/s1062873816080165
https://doi.org/10.3103/s1062873816080165
Autor:
Evgeny Yarevsky
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 80:947-950
Irregularities in the cross section of electron scattering off hydrogen and hydrogen-like He+, Li++, and Be+++ ions are studied using an s-wave model. The resonance structure and irregularities in the scattering data are compared. A unified approach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2ab1a4468e9fbcc253b310230c54b61
https://doi.org/10.3103/s106287381608044x
https://doi.org/10.3103/s106287381608044x