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Research Staff

Nils Wentzell, Ph.D.

Research Scientist, Center for Computational Quantum Physics

Email
[email protected]
Website
wentzell.github.io

Bio

Nils Wentzell is a Research Scientist at the Center for Computational Quantum Physics (CCQ) within the Flatiron Institute. His work centers around advancing cutting-edge computational techniques to address the quantum many-body problem in condensed matter physics. Wentzell specializes in a range of numerical methods, including Dynamical Mean-Field Theory, Continuous-time Quantum Monte Carlo, Exact Diagonalization, Functional Renormalization Group, and Diagrammatic Perturbation Theory. Beyond research, he is deeply passionate about modern open-source software development, particularly utilizing C++ and Python, with a strong focus on high-performance computing and parallel programming. Currently, Nils Wentzell leads the development of the TRIQS open-source software library at CCQ. He earned his M.Sc. in physics from RWTH Aachen University and completed their Ph.D. at the University of Tübingen in Germany.

Publications

Disentangling real space fluctuations: The diagnostics of metal-insulator transitions beyond single-particle spectral functions

Physical Review Research, arXiv:2501.18325, July 18, 2025

Michael Meixner, Marcel Kr\"amer, N. Wentzell, Pietro M. Bonetti, Sabine Andergassen, Alessandro Toschi, et al.

CTSEG: A segment picture quantum impurity solver based on TRIQS

The Journal of Open Source Software, May 23, 2025

N. Kavokine, Hao Lu, Thomas Ayral, M. Ferrero, N. Wentzell, and O. Parcollet

Discrete Lehmann representation of three-point functions

Physical Review B, arXiv:2405.06716, January 16, 2025

D. Kiese, Hugo U. R. Strand, Kun Chen, N. Wentzell, O. Parcollet, and J. Kaye

Embedded multi-boson exchange: A step beyond quantum cluster theories

arxiv:2406.15629, November 1, 2024

D. Kiese, N. Wentzell, and O. Parcollet

Projects

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TRIQS

Software

Featuring Nils Wentzell

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Quantum Showdown: Competing Methods of Solving Quantum Systems Put to the Test

Ian Fisk reaching up to some wires

Computation Opens New Doors for Science

Strange Metals Phase Diagram

Quantum Physicists Crack Mystery of ‘Strange Metals,’ a New State of Matter

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Center for Computational Quantum Physics

CCQ’s mission is to develop the concepts, theories, algorithms and codes needed to solve the quantum many-body problem and use the solutions to predict the behavior of materials and molecules of scientific and technological interest.

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