Eur. Phys. J. A (2005) 25: 493-498
https://doi.org/10.1140/epjad/i2005-06-136-7

ENAM 2004

Shell-model description of weakly bound and unbound nuclear states

¹ Department of Physics and Astronomy, University of Tennessee, 37996, Knoxville, TN, USA
² Physics Division, Oak Ridge National Laboratory, P.O. Box 2008, 37831, Oak Ridge, TN, USA
³ Joint Institute for Heavy Ion Research, 37831, Oak Ridge, TN, USA
⁴ Institute of Theoretical Physics, Warsaw University, ul. Hoża 69, 00-681, Warsaw, Poland
⁵ Grand Accélérateur National d’Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, BP 55027, F-14076, Caen Cedex 05, France

Received: 20 March 2005
Accepted: 20 March 2005
Published online: 8 July 2005

Abstract

A consistent description of weakly bound and unbound nuclei requires an accurate description of the particle continuum properties when carrying out multiconfiguration mixing. This is the domain of the Gamow Shell Model (GSM) which is the multiconfigurational shell model in the complex k-plane formulated using a complete Berggren ensemble representing bound single-particle (s.p.) states, s.p. resonances, and non-resonant complex energy continuum states. We shall discuss the salient features of effective interactions in weakly bound systems and show selected applications of the GSM formalism to p-shell nuclei. Finally, a development of the new non-perturbative scheme based on Density Matrix Renormalization Group methods to select the most significant continuum configurations in GSM calculations will be discussed shortly.