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8 papers · 1 filter
Ab-initio computation of neutron-rich oxygen isotopes
G. Hagen, T. Papenbrock, D. J. Dean +2
We compute the binding energy of neutron-rich oxygen isotopes and employ the coupled-cluster method and chiral nucleon-nucleon interactions at next-to-next-to-next-to-leading order…
Quasiparticle and quasihole states of nuclei around 56Ni
C. Barbieri, M. Hjorth-Jensen
The single-particle spectral function of 56Ni has been computed within the framework of self-consistent Green's functions theory. The Faddeev random phase approximation method and…
Geometry of effective Hamiltonians
Simen Kvaal
We give a complete geometrical description of the effective Hamiltonians common in nuclear shell model calculations. By recasting the theory in a manifestly geometric form, we rein…
Medium-mass nuclei from chiral nucleon-nucleon interactions
G. Hagen, T. Papenbrock, D. J. Dean +1
We compute the binding energies, radii, and densities for selected medium-mass nuclei within coupled-cluster theory and employ the "bare" chiral nucleon-nucleon interaction at orde…
Benchmark calculations for 3H, 4He, 16O and 40Ca with ab-initio coupled-cluster theory
G. Hagen, D. J. Dean, M. Hjorth-Jensen +2
We present ab-initio calculations for 3H, 4He, 16O, and 40Ca based on two-nucleon low-momentum interactions Vlowk within coupled-cluster theory. For 3H and 4He, our results are wit…
Coupled-cluster theory for three-body Hamiltonians
G. Hagen, T. Papenbrock, D. J. Dean +4
We derive coupled-cluster equations for three-body Hamiltonians. The equations for the one- and two-body cluster amplitudes are presented in a factorized form that leads to an effi…