Multi-reference many-body perturbation theory for nuclei: I. Novel PGCM-PT formalism
M Frosini, T Duguet, JP Ebran, V Somà - The European Physical Journal A, 2022 - Springer
Perturbative and non-perturbative expansion methods already constitute a tool of choice to
perform ab initio calculations over a significant part of the nuclear chart. In this context, the …
perform ab initio calculations over a significant part of the nuclear chart. In this context, the …
Angular-momentum projection in coupled-cluster theory: Structure of
Single-reference coupled-cluster theory is an accurate and affordable computational method
for the nuclear many-body problem. For open-shell nuclei, the reference state typically …
for the nuclear many-body problem. For open-shell nuclei, the reference state typically …
Accessing ground-state and excited-state energies in a many-body system after symmetry restoration using quantum computers
EA Ruiz Guzman, D Lacroix - Physical Review C, 2022 - APS
We explore the possibility to perform symmetry restoration with the variation after projection
technique on a quantum computer followed by additional postprocessing. The final goal is to …
technique on a quantum computer followed by additional postprocessing. The final goal is to …
[HTML][HTML] Ab initio computations from 78Ni towards 70Ca along neutron number N= 50
We present coupled-cluster computations of nuclei with neutron number N= 50 “south” of 78
Ni using nucleon-nucleon and three-nucleon forces from chiral effective field theory. We find …
Ni using nucleon-nucleon and three-nucleon forces from chiral effective field theory. We find …
[HTML][HTML] Towards heavy-mass ab initio nuclear structure: Open-shell Ca, Ni and Sn isotopes from Bogoliubov coupled-cluster theory
A Tichai, P Demol, T Duguet - Physics Letters B, 2024 - Elsevier
Recent developments in nuclear many-body theory enabled the description of open-shell
medium-mass nuclei from first principles by exploiting the spontaneous breaking of …
medium-mass nuclei from first principles by exploiting the spontaneous breaking of …
Normal ordering of three-nucleon interactions for ab initio calculations of heavy nuclei
Three-nucleon (3N) interactions are key for an accurate solution of the nuclear many-body
problem. However, fully taking into account 3N forces constitutes a computational challenge …
problem. However, fully taking into account 3N forces constitutes a computational challenge …
Moving away from singly-magic nuclei with Gorkov Green's function theory
V Somà, C Barbieri, T Duguet, P Navrátil - The European Physical Journal …, 2021 - Springer
Ab initio calculations of bulk nuclear properties (ground-state energies, root-mean-square
charge radii and charge density distributions) are presented for seven complete isotopic …
charge radii and charge density distributions) are presented for seven complete isotopic …
Ab initio description of monopole resonances in light-and medium-mass nuclei: I. Technical aspects and uncertainties of ab initio PGCM calculations
Giant resonances (GRs) are a striking manifestation of collective motions in mesoscopic
systems such as atomic nuclei. Until recently, theoretical investigations have essentially …
systems such as atomic nuclei. Until recently, theoretical investigations have essentially …
Coupled-cluster theory for strong entanglement in nuclei
Atomic nuclei can exhibit shape coexistence and multireference physics that enters in their
ground states, and accurately capturing the ensuing correlations and entanglement is …
ground states, and accurately capturing the ensuing correlations and entanglement is …
Ab initio description of monopole resonances in light- and medium-mass nuclei: II. Ab initio PGCM calculations in , and
Giant resonances (GRs) are a striking manifestation of collective motions in atomic nuclei.
The present paper is the second in a series of four dedicated to the use of the projected …
The present paper is the second in a series of four dedicated to the use of the projected …