Five-Body Integral Equations and Solution of the η−4Nη Problem; Few-Body Systems; Vol. 61, iss. 2
| Parent link: | Few-Body Systems Vol. 61, iss. 2.— 2020.— [18, 10 p.] |
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| Summary: | Title screen The Alt-Grassberger-Sandhas equations for the five-body problem are solved for the case of the driving two-body potentials limited to s-waves. The separable pole expansion method is employed to convert the equations into the effective quasi-two-body form. Numerical results are presented for five identical bosons as well as for the system containing an ηη-meson and four nucleons. Accuracy of the separable expansion is investigated. It is shown that both in (1+4)(1+4) and (2+3)(2+3) fragmentation, the corresponding eigenvalues decrease rather rapidly, what, combined with the alternation of their signs, leads to rather good convergence of the results. For the η−4Nη−4N system the crucial influence of the subthreshold behavior of the ηNηN amplitude on the ηη-nuclear low-energy interaction is discussed. Режим доступа: по договору с организацией-держателем ресурса |
| Sprog: | engelsk |
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2020
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| Fag: | |
| Online adgang: | https://doi.org/10.1007/s00601-020-01551-7 |
| Format: | MixedMaterials Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664598 |
MARC
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| 200 | 1 | |a Five-Body Integral Equations and Solution of the η−4Nη Problem |f O. V. Kolesnikov, A. I. Fiks (Fix) | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 34 tit.] | ||
| 330 | |a The Alt-Grassberger-Sandhas equations for the five-body problem are solved for the case of the driving two-body potentials limited to s-waves. The separable pole expansion method is employed to convert the equations into the effective quasi-two-body form. Numerical results are presented for five identical bosons as well as for the system containing an ηη-meson and four nucleons. Accuracy of the separable expansion is investigated. It is shown that both in (1+4)(1+4) and (2+3)(2+3) fragmentation, the corresponding eigenvalues decrease rather rapidly, what, combined with the alternation of their signs, leads to rather good convergence of the results. For the η−4Nη−4N system the crucial influence of the subthreshold behavior of the ηNηN amplitude on the ηη-nuclear low-energy interaction is discussed. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Few-Body Systems | ||
| 463 | |t Vol. 61, iss. 2 |v [18, 10 p.] |d 2020 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 700 | 1 | |a Kolesnikov |b O. V. |g Oleg Valerjevich | |
| 701 | 1 | |a Fiks (Fix) |b A. I. |c Physicist |c Professor of Tomsk Polytechnic University, Doctor of Physical and Mathematical Sciences |f 1968- |g Alexander Ivanovich |3 (RuTPU)RU\TPU\pers\33830 |9 17419 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа физики высокоэнергетических процессов |c (2017- ) |3 (RuTPU)RU\TPU\col\23551 |
| 801 | 2 | |a RU |b 63413507 |c 20210429 |g RCR | |
| 856 | 4 | |u https://doi.org/10.1007/s00601-020-01551-7 | |
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