Toward a model-independent approach to nuclear structure
- Thomas Papenbrock, University of Tennessee/Oak Ridge National Lab
Tuesday, April 24, 11:00 AM - Theory Seminar
NSCL Seminar Room
Effective field theory provides us with a model-independent approach to nuclear structure. This presentation focuses on recent coupled-cluster computations of neutron-rich isotopes of oxygen and calcium that are based on interactions from chiral effective field theory, and on an effective theory for deformed nuclei. The coupled-cluster computations yield oxygen-24 as the heaviest bound isotope of oxygen, and several long-lived excited resonances in oxygen-24. In neutron-rich isotopes of calcium, the computations show that Ca54 has only a soft sub-shell closure similar in strength to Ca52, and that Ca61 is unbound with respect to Ca60. The effective theory for deformed nuclei reproduces the Bohr-Mottelson collective model in lowest orders, and it treats even-even and odd-even nuclei on equal footing.