72 citations · 247 across the 13 of their papers we have counts for
13 papers
Similarity renormalization group for nuclear forces
Matthias Heinz
Renormalization group methods generate low-resolution Hamiltonians that are more diagonal, with reduced coupling between low- and high-energy states, and thus easier to solve. This…
Computational schemes for the Magnus expansion of the in-medium similarity renormalization group
Matthias Heinz
The in-medium similarity renormalization group (IMSRG) is a popular many-body method used for computations of nuclei. It solves the many-body Schrödinger equation through a continu…
Ab initio computations of the fourth-order charge density moments of Ca and Pb
T. Miyagi, M. Heinz, A. Schwenk
Neutron skins of neutron-rich nuclei connect nuclei with the matter in neutron stars. High-precision measurements of nuclear charge densities to extract higher-order moments are pr…
Exactness of the normal-ordered two-body truncation of three-nucleon forces
Maxwell Rothman, Ben Johnson-Toth, Francesca Bonaiti +3
Reference-state-based many-body methods start from Hamiltonians that are normal ordered with respect to the reference state. In low-energy nuclear physics applications normal-order…
Improved structure of calcium isotopes from ab initio calculations
M. Heinz, T. Miyagi, S. R. Stroberg +3
The in-medium similarity renormalization group (IMSRG) is a powerful and flexible many-body method to compute the structure of nuclei starting from nuclear forces. Recent developme…
Randomized Low-Rank Decompositions of Nuclear Three-Body Interactions
A. Tichai, P. Arthuis, K. Hebeler +5
First-principles simulations of many-fermion systems are commonly limited by the computational requirements of processing large data objects. As a remedy, we propose the use of low…
Normal ordering of three-nucleon interactions for ab initio calculations of heavy nuclei
K. Hebeler, V. Durant, J. Hoppe +4
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 challeng…
Least-square approach for singular value decompositions of scattering problems
A. Tichai, P. Arthuis, K. Hebeler +4
It was recently observed that chiral two-body interactions can be efficiently represented using matrix factorization techniques such as the singular value decomposition. However, t…
Nuclear Forces for Precision Nuclear Physics -- a collection of perspectives
Ingo Tews, Zohreh Davoudi, Andreas Ekström +42
This is a collection of perspective pieces contributed by the participants of the Institute of Nuclear Theory's Program on Nuclear Physics for Precision Nuclear Physics which was h…
Importance truncation for the in-medium similarity renormalization group
J. Hoppe, A. Tichai, M. Heinz +2
Ab initio nuclear many-body frameworks require extensive computational resources, especially when targeting heavier nuclei. Importance-truncation (IT) techniques allow to significa…
Low-rank matrix decompositions for ab initio nuclear structure
A. Tichai, P. Arthuis, K. Hebeler +3
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 ex…
In-medium similarity renormalization group with three-body operators
M. Heinz, A. Tichai, J. Hoppe +2
Over the past decade the in-medium similarity renormalization group (IMSRG) approach has proven to be a powerful and versatile ab initio many-body method for studying medium-mass n…
Natural orbitals for many-body expansion methods
J. Hoppe, A. Tichai, M. Heinz +2
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 many-body ope…