Resonances in the three-neutron system - art. no. 024002

Citation
H. Witala et W. Glockle, Resonances in the three-neutron system - art. no. 024002, PHYS REV C, 6002(2), 1999, pp. 4002
Citations number
42
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW C-NUCLEAR PHYSICS
ISSN journal
0556-2813 → ACNP
Volume
6002
Issue
2
Year of publication
1999
Database
ISI
SICI code
0556-2813(199908)6002:2<4002:RITTS->2.0.ZU;2-O
Abstract
A study of three-body resonances has been performed in the framework of con figuration-space Faddeev equations. The importance of keeping a sufficient number of terms in the asymptotic expansion of the resonance wave function is pointed out. We investigated three neutrons interacting in selected forc e components taken from realistic nn forces. Three-neutron resonance pole t rajectories connected to artificially enhanced nn forces could be found. Th e final pole positions corresponding to the actual force strengths could no t be found due to the onset of numerical instabilities. The numerically rel iable results achieved, however, make it likely, that three-neutron resonan ce energies will have large imaginary parts and are therefore physically no t interesting. A straightforward application of complex scaling to three-nu cleon systems with realistic forces could not be controlled numerically. [S 0556-2813(99)04207-7].