95 citations · 1k across the 42 of their papers we have counts for
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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…
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…
Importance truncation in non-perturbative many-body techniques
Andrea Porro, Vittorio Somà, Alexander Tichai +1
Expansion many-body methods correspond to solving complex tensor networks. The (iterative) solving of the network and the (repeated) storage of the unknown tensors requires a compu…
ADG: Automated generation and evaluation of many-body diagrams III. Bogoliubov in-medium similarity renormalization group formalism
A. Tichai, P. Arthuis, H. Hergert +1
The goal of the present paper is twofold. First, a novel expansion many-body method applicable to superfluid open-shell nuclei, the so-called Bogoliubov in-medium similarity renorm…
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…