Kernphysikalisches Kolloquium
Location: ITP, Science Campus Riedberg, Max-von-Laue-Str. 1, room 02.116
Time: Thursday, July 05, 2012, 4:30-5:30pm (plus 10min for discussion)
Contact: hees@fias.uni-frankfurt.de
New Horizons in Ab-Initio Nuclear Structure Theory
Robert Roth (Technical University Darmstadt)
Low-energy nuclear theory has entered an era of ab initio nuclear structure and reaction calculations based on input from QCD. One of the most promising paths from QCD to nuclear observables employs Hamiltonians constructed within chiral effective field theory as starting point for precise ab initio studies. However, the full inclusion of chiral two- plus three-nucleon (NN+3N) interactions in exact and approximate many-body calculations poses a formidable challenge. We discuss recent breakthroughs that allow for ab initio calculations for ground states and spectra of nuclei throughout the p- and the lower sd-shell with full 3N interactions using consistent Similarity Renormalization Group (SRG) transformations and the Importance-Truncated No-Core Shell Model (IT-NCSM). We discuss the impact of and the sensitivity on the 3N interaction for selected observables. Moreover, we discuss extensions of these ab initio calculations to heavy nuclei within coupled-cluster theory and to low-energy reactions.