We develop an extension of eigenvector continuation (EC) that makes it possible to
extrapolate simulations of quantum systems in finite periodic boxes across large ranges of …

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 …

Quantum resonances, ie, metastable states with a finite lifetime, play an important role in
nuclear physics and other domains. Describing this phenomenon theoretically is generally a …

We report multipronged progress on the stochastic averaging approach to numerical
analytic continuation of imaginary-time correlation functions computed by quantum Monte …

The field of model order reduction (MOR) is growing in importance due to its ability to extract
the key insights from complex simulations while discarding computationally burdensome …

The study of open quantum systems (OQSs), ie, systems interacting with an environment,
impacts our understanding of exotic nuclei in low-energy nuclear physics, hadrons, cold …

Eigenvector continuation (EC) has been shown to accurately and efficiently reproduce
ground states for targeted sets of Hamiltonian parameters. It uses as variational basis …

A large, or even infinite, local Hilbert space dimension poses a significant computational
challenge for simulating quantum systems. In this work, we present a matrix product state …

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 …

Projection of many-body states with good angular momentum from an initial state is usually
accomplished by a three-dimensional integral. We show how projection can instead be …