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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…
Excited states from eigenvector continuation: the anharmonic oscillator
Margarida Companys Franzke, Alexander Tichai, Kai Hebeler +1
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 a…
Constraints on the dense matter equation of state and neutron star properties from NICER's mass-radius estimate of PSR J0740+6620 and multimessenger observations
G. Raaijmakers, S. K. Greif, K. Hebeler +7
In recent years our understanding of the dense matter equation of state (EOS) of neutron stars has significantly improved by analyzing multimessenger data from radio/X-ray pulsars,…
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…
Converged ab initio calculations of heavy nuclei
T. Miyagi, S. R. Stroberg, P. Navrátil +2
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 calculatio…
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…