72 citations · 99 across the 5 of their papers we have counts for
17 papers
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…
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…
ADG: Automated generation and evaluation of many-body diagrams II. Particle-number projected Bogoliubov many-body perturbation theory
P. Arthuis, A. Tichai, J. Ripoche +1
We describe the second version (v2.0.0) of the code ADG that automatically (1) generates all valid off-diagonal Bogoliubov many-body perturbation theory diagrams at play in particl…