Quantum many-body theory has witnessed tremendous progress in various fields, ranging
from atomic and solid-state physics to quantum chemistry and nuclear structure. Due to the …

Eigenvector continuation (EC) has recently attracted a lot attention in nuclear structure and
reactions as a variational resummation tool for many-body expansions. While previous …

The nuclear many-body problem for medium-mass systems is commonly addressed using
wave-function expansion methods that build upon a second-quantized representation of …

The extension of ab initio quantum many-body theory to higher accuracy and larger systems
is intrinsically limited by the handling of large data objects in form of wave-function …

The solution of the nuclear A-body problem encounters severe limitations from the size of
many-body operators that are processed to solve the stationary Schrödinger equation …

In recent years many-body perturbation theory encountered a renaissance in the field of ab
initio nuclear structure theory. In various applications it was shown that perturbation theory …

In the present work, we initiate a program that explores modewise Johnson–Lindenstrauss
embeddings (JLEs) as a tool to reduce the computational cost and memory requirements of …

We apply high-order many-body perturbation theory for the calculation of ground-state
energies of closed-shell nuclei using realistic nuclear interactions. Using a simple recursive …

In order to solve the A-body Schrödinger equation both accurately and efficiently for open-
shell nuclei, a novel many-body method coined as Bogoliubov many-body perturbation …

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 …