Diabatic and Adiabatic Collective Motion in a Model Pairing System
| dc.creator | Nakatsukasa, Takashi | |
| dc.creator | Walet, Niels R. | |
| dc.date | 1997-10-16 | |
| dc.date.accessioned | 2026-07-07T11:11:24Z | |
| dc.date.available | 2026-07-07T11:11:24Z | |
| dc.description | Large amplitude collective motion is investigated for a model pairing Hamiltonian containing an avoided level crossing. A classical theory of collective motion for the adiabatic limit is applied utilising either a time-dependent mean-field theory or a direct parametrisation of the time-dependent Schrödinger equation. A modified local harmonic equation is formulated to take account of the Nambu-Goldstone mode. It turns out that in some cases the system selects a diabatic path. Requantizing the collective Hamiltonian, a reasonable agreement with an exact calculation for the low-lying levels are obtained for both weak and strong pairing force. This improves on results of the conventional Born-Oppenheimer approximation. | |
| dc.description | 23 pages, 7 ps figures. Latex, uses revtex and graphicx | |
| dc.identifier | https://arxiv.org/abs/nucl-th/9710037 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/9710037 | |
| dc.identifier | Phys.Rev.C57:1192-1203,1998 | |
| dc.identifier | doi:10.1103/PhysRevC.57.1192 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191082 | |
| dc.subject | Nuclear Theory | |
| dc.title | Diabatic and Adiabatic Collective Motion in a Model Pairing System | |
| dc.type | text |