Author: Philipp Hansmann

We are very happy to announce another arXiv preprint together with our Icelandic colleagues: This work introduces a simple yet powerful extension to Neural-Network Configuration Interaction (NNCI) by incorporating natural orbitals (NOs)—the eigenfunctions of the one-particle density matrix—as an opt...

We are excited to announce the latest results from the collaboration with our Icelandic friends from theoretical chemistry as new preprint on arXiv. Our joint work tackles the long-standing challenge of accurately describing Rydberg excited states—molecular states characterized by extremely diffuse ...

As collaborators of the group of Prof. Dr. Thomas Schaefer (Univerity of Trieste) we're glad to announce our latest joint preprint introducing C-CDMFT, a real-space cluster method that treats electronic interactions and disorder on equal footing. The approach combines the molecular coherent potentia...

We are pleased to announce the publication of our new paper in SciPost Physics. In our article, we investigate dynamical mean-field calculations of the three-band Emery model, focusing on the one- and two-particle levels for material-realistic parameters of high-(Tc) superconductors. Our results sho...

We are pleased to announce our new joint publication with Theoretical Chemsits at the University of Iceland in the Journal of Chemical Theory and Computation (JCTC). In this work, we combine Hartree–Fock with a neural-network-supported quantum-cluster solver to introduce the Neural-Network Configura...

We are pleased to announce the publication of our new paper in Physical Review B. Our work introduces a neural-network approach to optimize the selection of Slater determinants in configuration interaction (CI) calculations for strongly correlated quantum systems. Using a neural classifier and activ...

SOLAX is an open-source Python solver for fermionic quantum many-body systems with neural-network support. It provides a modular framework—based on the standard formalism of second quantization—for building basis sets, states, and operators, and for solving quantum cluster problems efficiently. Impl...

In 2018 we predicted chiral d-wave superconductivity in adatom lattices of Sn:Si(111) and Pb:Si(111) (Cao et al. 2018). Two years later that superconductivity was found (Wu et al. 2020) and in 2023 the chiral d-wave symmetry was confirmed (Ming et al. 2023). We continued the search for further pr...

Join the frontier of condensed matter research and tackle the “mother of all models”. The Hubbard model in 2 and larger dimensions is an unsolved paradigm of modern condensed matter physics and believed to hold the key for understanding emergent phenomena like  high-temperature superconductivity, qu...

Yorick L. A. Schmerwitz, Louis Thirion, Gianluca Levi, Elvar Ö. Jónsson, Pavlo Bilous, Hannes Jónsson, and Philipp Hansmann We apply a recently proposed computational protocol for a neural-network-supported configuration interaction calculation to the paradigmatic N2 molecule. By comparison of corr...