Abstract
We develop ab-initio coupled-cluster theory to describe resonant and weakly bound states along the neutron drip line. We compute the ground states of the helium chain 3-10He within coupled-cluster theory in singles and doubles (CCSD) approximation. We employ a spherical Gamow-Hartree-Fock basis generated from the low-momentum N3LO nucleon-nucleon interaction. This basis treats bound, resonant, and continuum states on an equal footing, and is therefore optimal for the description of properties of drip line nuclei where continuum features play an essential role. Within this formalism, we present an ab-initio calculation of energies and decay widths of unstable nuclei starting from realistic interactions.
| Original language | English |
|---|---|
| Pages (from-to) | 169-173 |
| Number of pages | 5 |
| Journal | Physics Letters B |
| Volume | 656 |
| Issue number | 4-5 |
| DOIs | |
| State | Published - Nov 22 2007 |
Funding
We acknowledge discussions with Nicolas Michel, Jimmy Rotureau and Andreas Nogga. This work was supported in part by the US Department of Energy under Contract Nos. DE-AC05-00OR22725 (Oak Ridge National Laboratory), DE-FG02-96ER40963 (University of Tennessee), DE-FG05-87ER40361 (Joint Institute for Heavy Ion Research), and by the Research Council of Norway (Supercomputing grant NN2977K). Computational resources were provided by the Oak Ridge Leadership Class Computing Facility and the National Energy Research Scientific Computing Facility.
Keywords
- Coupled Cluster theory
- Ground state resonances
- Nuclear structure calculations
- Weakly bound nuclei