176 citations · 642 across the 10 of their papers we have counts for
10 papers
Symmetry broken and restored coupled-cluster theory. II. Global gauge symmetry and particle number
T. Duguet, A. Signoracci
We have recently extended many-body perturbation theory and coupled-cluster theory performed on top of a Slater determinant breaking rotational symmetry to allow for the restoratio…
Open -shell nuclei from first principles
G. R. Jansen, M. D. Schuster, A. Signoracci +2
We extend the ab initio coupled-cluster effective interaction (CCEI) method to deformed open-shell nuclei with protons and neutrons in the valence space, and compute binding energi…
Ab initio Bogoliubov coupled cluster theory for open-shell nuclei
Angelo Signoracci, Thomas Duguet, Gaute Hagen +1
Ab initio many-body methods address closed-shell nuclei up to mass A ~ 130 on the basis of realistic two- and three-nucleon interactions. Several routes to address open-shell nucle…
Quasiparticle Coupled Cluster Theory for Pairing Interactions
Thomas M Henderson, Jorge Dukelsky, Gustavo E. Scuseria +2
We present an extension of the pair coupled cluster doubles (p-CCD) method to quasiparticles and apply it to the attractive pairing Hamiltonian. Near the transition point where num…
Ab-initio coupled-cluster effective interactions for the shell model: Application to neutron-rich oxygen and carbon isotopes
G. R. Jansen, J. Engel, G. Hagen +2
We derive and compute effective valence-space shell-model interactions from ab-initio coupled-cluster theory and apply them to open-shell and neutron-rich oxygen and carbon isotope…
Effects of isospin mixing in the A=32 quintet
Angelo Signoracci, B. Alex Brown
For the A=32 T=2 quintet we provide a unified theoretical description for three related aspects of isospin mixing: the necessity of more than three terms in the isobaric mass multi…