107 citations · 224 across the 18 of their papers we have counts for
18 papers
Bridging Ab Initio Symmetries and Global Nuclear Masses with Interpretable Neural Networks
Phong Dang, Evander Espinoza, Xiaoliang Wan +6
Ab initio theory establishes Wigner's SU(4) and Elliott's SU(3) as dominant symmetries of the nuclear force in light and intermediate-mass nuclei. Previous work shows the relevance…
Proton and Neutron Elastic Scattering on He Targets from SA-NCSM Optical Potentials
Darin C. Mumma, Matthew B. Burrows, Kristina D. Launey +2
We construct and discuss nucleon-nucleus optical potentials at low energies for He targets. In this work, we use the SA-NCSM/GF…
Unmasking Hidden Wigner's Symmetry from First Principles
Phong Dang, Daniel Langr, Tomas Dytrych +2
We present quantitative evidence that high-quality internucleon forces derived from EFT exhibit a striking dominance of Wigner's supermultiplet symmetry, without invoking the la…
Unexpected Rise in Nuclear Collectivity from Short-Range Physics
Kevin S. Becker, Kristina D. Launey, Andreas Ekström +4
We discover a surprising relation between the collective motion of nucleons within atomic nuclei, traditionally understood to be driven by long-range correlations, and short-range…
Ab initio informed 20Ne(p, p)16O reaction elucidates the emergence of alpha clustering from chiral potentials
G. H. Sargsyan, Kazuki Yoshida, Kazuyuki Ogata +4
We report on the first \textit{ab initio} informed knock-out reaction in the intermediate-mass region, with the aim to probe the underlying chiral potential and its impact on t…
Coupling and Recoupling Coefficients for Wigner's U(4) Supermultiplet Symmetry
Phong Dang, Jerry P. Draayer, Feng Pan +5
A novel procedure for evaluating Wigner coupling coefficients and Racah recoupling coefficients for U(4) in two group-subgroup chains is presented. The canonical U(4)->U(3)->U(2)->…
Uncertainty Quantification of Collective Nuclear Observables From the Chiral Potential Parametrization
Kevin S. Becker, Kristina D. Launey, Andreas Ekström +4
We perform an uncertainty estimate of quadrupole moments and B(E2) transition rates that inform nuclear collectivity. In particular, we study the low-lying states of 6Li and 12C us…
Response functions and giant monopole resonances for light to medium-mass nuclei from the \textit{ab initio} symmetry-adapted no-core shell model
M. Burrows, R. B. Baker, S. Bacca +3
Using the \textit{ab initio} symmetry-adapted no-core shell model, we compute sum rules and response functions for light to medium-mass nuclei, starting from interactions that are…
Understanding the Effect of Chiral NN Parametrization on Nuclear Shapes From an Ab Initio Perspective
Kevin S. Becker, Kristina D. Launey, Andreas Ekström +5
The ab initio symmetry-adapted no-core shell model naturally describes nuclear deformation and collectivity, and is therefore well-suited to studying the dynamics and coexistence o…
Ab initio translationally invariant nucleon-nucleus optical potentials
M. Burrows, K. D. Launey, A. Mercenne +4
We combine the \textit{ab initio} symmetry-adapted no-core shell model (SA-NCSM) with the single-particle Green's function approach to construct optical potentials rooted in first…
Efficacy of the symmetry-adapted basis for ab initio nucleon-nucleus interactions for light- and intermediate-mass nuclei
Alexis Mercenne, Kristina D. Launey, Tomas Dytrych +4
We study the efficacy of a new ab initio framework that combines the symmetry-adapted (SA) no-core shell-model approach with the resonating group method (RGM) for unified descripti…
Impact of clustering on the Li decay and recoil form factors
G. H. Sargsyan, K. D. Launey, M. T. Burkey +10
We place unprecedented constraints on recoil corrections in the decay of Li, by identifying a strong correlation between them and the Li ground state quadrupole moment…
Physics of nuclei: Key role of an emergent symmetry
T. Dytrych, K. D. Launey, J. P. Draayer +6
Exact symmetry and symmetry-breaking phenomena play a key role in providing a better understanding of the physics of many-particle systems, from quarks and atomic nuclei, to molecu…
On Memory Footprints of Partitioned Sparse Matrices
Daniel Langr
Runtime characteristics of sparse matrix computations and related processes may be often improved by reducing memory footprints of involved matrices. Such a reduction can be usuall…
Efficacy of the SU(3) scheme for ab initio large-scale calculations beyond the lightest nuclei
T. Dytrych, P. Maris, K. D. Launey +7
We report on the computational characteristics of ab initio nuclear structure calculations in a symmetry-adapted no-core shell model (SA-NCSM) framework. We examine the computation…
Electron-scattering form factors for 6Li in the ab initio symmetry-guided framework
T. Dytrych, A. C. Hayes, K. D. Launey +5
We present an ab initio symmetry-adapted no-core shell-model description for Li. We study the structure of the ground state of Li and the impact of the symmetry-guided…
Loading Large Sparse Matrices Stored in Files in the Adaptive-Blocking Hierarchical Storage Format
Daniel Langr, Ivan Šimeček, Pavel Tvrdík
The parallel algorithm for loading large sparse matrices from files into distributed memories of high performance computing (HPC) systems is presented. This algorithm was designed…
Fake Run-Time Selection of Template Arguments in C++
Daniel Langr, Pavel Tvrdík, Tomáš Dytrych +1
C++ does not support run-time resolution of template type arguments. To circumvent this restriction, we can instantiate a template for all possible combinations of type arguments a…