activity
20052026
most citedPolaritonic Hofstadter Butterfly and Cavity-Control of the Quantized Hall Conductance

60 citations · 557 across the 44 of their papers we have counts for

collaborators

45 papers

cond-mat.mtrl-sci2026

Quantum electrodynamics of equilibrium systems: A rigorous Maxwell-regularized functional-theoretic formulation

Markus Penz, Christian Jöns, Michael Ruggenthaler +1

A framework for quantum electrodynamics of equilibrium systems is proposed that takes the Maxwell equations as foundational and links them to the structure of density-functional th…

math.NA2026

Moreau-Yosida-based Kohn-Sham Inversion for Periodic Systems

Vebjørn H. Bakkestuen, Michael F. Herbst, Vegard Falmår +2

Density-potential inversion for periodic systems within Moreau-Yosida-regularised density-functional theory is investigated, both theoretically and numerically. We develop the fram…

math-ph2026

Unified Framework for Functional Theories of Quantum Systems

Chih-Chun Wang, Julia Liebert, Markus Penz +1

We introduce and study a unified framework for density-functional theory and its variants for quantum systems on finite-dimensional Hilbert spaces. These theories seek to reduce th…

physics.chem-ph2026

Capturing electron correlation at mean-field cost: Assessment of i-DMFT and the underlying correlation conjecture

Paul G. Graf, Florian Matz, Lexin Ding +3

Accurately treating strong electron correlation in quantum chemistry typically requires multireference wave-function methods with steep computational scaling. The recently proposed…

cond-mat.mtrl-sci2025

Perspective on Moreau-Yosida Regularization in Density-Functional Theory

Markus Penz, Michael F. Herbst, Trygve Helgaker +1

Within density-functional theory, Moreau-Yosida regularization enables both a reformulation of the theory and a mathematically well-defined definition of the Kohn-Sham approach. It…

math-ph2025

v-Representability on a one-dimensional torus at elevated temperatures

Sarina M. Sutter, Markus Penz, Michael Ruggenthaler +2

We extend a previous result [Sutter et al., J. Phys. A: Math. Theor. 57, 475202 (2024)] to give an explicit form of the set of -representable densities on the one-dimensional to…