Combining symmetry breaking and restoration with configuration interaction: A highly accurate many-body scheme applied to the pairing Hamiltonian
J Ripoche, D Lacroix, D Gambacurta, JP Ebran… - Physical Review C, 2017 - APS
Background: Ab initio many-body methods have been developed over the past ten years to
address mid-mass nuclei. In their best current level of implementation, their accuracy is of …
address mid-mass nuclei. In their best current level of implementation, their accuracy is of …
A Guided Tour of ab initio Nuclear Many-Body Theory
H Hergert - Frontiers in Physics, 2020 - frontiersin.org
Over the last decade, new developments in Similarity Renormalization Group techniques
and nuclear many-body methods have dramatically increased the capabilities of ab initio …
and nuclear many-body methods have dramatically increased the capabilities of ab initio …
Normal-ordered k-body approximation in particle-number-breaking theories
J Ripoche, A Tichai, T Duguet - The European Physical Journal A, 2020 - Springer
The reach of ab initio many-body theories is rapidly extending over the nuclear chart.
However, dealing fully with three-nucleon, possibly four-nucleon, interactions makes the …
However, dealing fully with three-nucleon, possibly four-nucleon, interactions makes the …
Converged ab initio calculations of heavy nuclei
We propose a novel storage scheme for three-nucleon (3N) interaction matrix elements
relevant for the normal-ordered two-body approximation used extensively in ab initio …
relevant for the normal-ordered two-body approximation used extensively in ab initio …
Current status of very-large-basis Hamiltonian diagonalizations for nuclear physics
CW Johnson - arXiv preprint arXiv:1809.07869, 2018 - arxiv.org
Today there are a plethora of many-body techniques for calculating nuclear wave functions
and matrix elements. I review the status of that reliable workhorse, the interacting shell …
and matrix elements. I review the status of that reliable workhorse, the interacting shell …
Natural orbitals for the ab initio no-core configuration interaction approach
Ab initio no-core configuration interaction (NCCI) calculations for the nuclear many-body
problem have traditionally relied upon an antisymmetrized product (Slater determinant) …
problem have traditionally relied upon an antisymmetrized product (Slater determinant) …
In-medium k-body reduction of n-body operators: A flexible symmetry-conserving approach based on the sole one-body density matrix
M Frosini, T Duguet, B Bally… - The European Physical …, 2021 - Springer
The computational cost of ab initio nuclear structure calculations is rendered particularly
acute by the presence of (at least) three-nucleon interactions. This feature becomes …
acute by the presence of (at least) three-nucleon interactions. This feature becomes …
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 …
Tensor-decomposition techniques for ab initio nuclear structure calculations: From chiral nuclear potentials to ground-state energies
Background: The computational resources needed to generate the ab initio solution of the
nuclear many-body problem for increasing mass number and/or accuracy necessitates …
nuclear many-body problem for increasing mass number and/or accuracy necessitates …
Ab initio Bogoliubov coupled cluster theory for open-shell nuclei
Background: Ab initio many-body methods have been developed over the past 10 yr to
address closed-shell nuclei up to mass A≈ 130 on the basis of realistic two-and three …
address closed-shell nuclei up to mass A≈ 130 on the basis of realistic two-and three …