Five-Body Integral Equations and Solution of the η−4Nη Problem
| Parent link: | Few-Body Systems Vol. 61, iss. 2.— 2020.— [18, 10 p.] |
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| 要約: | 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 |
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2020
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| オンライン･アクセス: | https://doi.org/10.1007/s00601-020-01551-7 |
| フォーマット: | 電子媒体 図書の章 |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664598 |