Ab initio path to heavy nuclei

作者：Binder Sven^*; Langhammer Joachim; Calci Angelo; Roth Robert

来源：Physics Letters B, 2014, 736: 119-123.

DOI：10.1016/j.physletb.2014.07.010

• Ab initio nuclear structure theory
• Chiral effective field theory
• Coupled-cluster theory
• Heavy nuclei

We present the first ab initio calculations of nuclear ground states up into the domain of heavy nuclei, spanning the range from O-16 to Sn-132, based on two- plus three-nucleon interactions derived within chiral effective field theory. We employ the similarity renormalization group for preparing the Hamiltonian and use coupled-cluster theory to solve the many-body problem for nuclei with closed sub-shells. Through an analysis of theoretical uncertainties resulting from various truncations in this framework, we identify and eliminate the technical hurdles that previously inhibited the step beyond medium-mass nuclei, allowing for reliable validations of nuclear Hamiltonians in the heavy regime. Following this path we show that chiral Hamiltonians qualitatively reproduce the systematics of nuclear ground-state energies up to the neutron-rich Sn isotopes.

• 出版日期2014-9-7