florian.sammueller at uni-bayreuth dot de
Office: 2.2.01.483.1, NWII
I am a physicist working as a postdoc in the group of Prof. Matthias Schmidt (Theoretical Physics II, Department of Physics) at the University of Bayreuth in Germany. My research addresses the development of theoretical and computational methods to study the statistical mechanical behavior of fluids and soft matter. In particular, I am interested in utilizing and connecting many-body simulations, classical density functional theory, machine learning and invariance properties to investigate these systems.
Publications
2025
-
Why gauge invariance applies to statistical mechanics
J. Phys. A: Math. Theor. 58, 125003 (2025) · arXiv:2409.14166 · Code and data on GitHub · PDF -
Metadensity functional theory for classical fluids: Extracting the pair potential
Phys. Rev. Lett. 134, 107301 (2025) · arXiv:2411.06972 · Code and data on GitHub · PDF
PRL Editors' Suggestion -
Neural density functional theory of liquid-gas phase coexistence
Phys. Rev. X 15, 011013 (2025) · arXiv:2408.15835 · Code and data on GitHub and Zenodo · PDF
Featured in Physics 18, 17 (2025) by Mark Buchanan, Press Release of the University of Bayreuth -
Why hyperdensity functionals describe any equilibrium observable
J. Phys.: Condens. Matter 37, 083001 (2025) · arXiv:2410.10534 · PDF
2024
-
Gauge invariance of equilibrium statistical mechanics
Phys. Rev. Lett. 133, 217101 (2024) · arXiv:2406.19235 · PDF
PRL Editors' Suggestion, Selected for PRL Collection of the Year 2024, Featured in Physics 17, 163 (2024) by Benjamin Rotenberg and Physics Today 78, 11 (2025) by Johanna L. Miller, On the Cover of Phys. Today 78 (2) -
Neural density functionals: Local learning and pair-correlation matching
Phys. Rev. E 110, L032601 (2024) · arXiv:2406.03327 · Code and data on GitHub · PDF · SI
PRE Editors' Suggestion -
Neural force functional for non-equilibrium many-body colloidal systems
Mach. Learn.: Sci. Technol. 5, 035062 (2024) · arXiv:2406.03327 · Code and data on Zenodo · PDF -
Hyperdensity functional theory of soft matter
Phys. Rev. Lett. 133, 098201 (2024) · arXiv:2403.07845 · Code and data on GitHub and Zenodo · PDF · SI
PRL Editors' Suggestion, Press Release of the University of Bayreuth -
Noether invariance theory for the equilibrium force structure of soft matter
J. Phys. A: Math. Theor. 57, 175001 (2024) · arXiv:2401.14971 · PDF -
Why neural functionals suit statistical mechanics
J. Phys.: Condens. Matter 36, 243002 (2024) · arXiv:2312.04681 · Tutorial on GitHub · PDF -
Hyperforce balance via thermal Noether invariance of any observable
Commun. Phys. 7, 103 (2024) · arXiv:2308.12098 · PDF
May the Hyperforce be with you! (Sophie's blog post in Research Communities by Springer Nature)
2023
-
Neural functional theory for inhomogeneous fluids: Fundamentals and applications
Proc. Natl. Acad. Sci. USA 120, e2312484120 (2023) · arXiv:2307.04539 · Code and data on GitHub and Zenodo · PDF · SI
Press Release of the University of Bayreuth -
Local measures of fluctuations in inhomogeneous fluids: Statistical mechanics and illustrative applications
J. Phys.: Condens. Matter 35, 425102 (2023) · arXiv:2305.07297 · PDF -
Perspective: How to overcome dynamical density functional theory
J. Phys.: Condens. Matter 35, 271501 (2023) · arXiv:2301.12156 · PDF
Press Release of the University of Bayreuth -
Noether-constrained correlations in equilibrium liquids
Phys. Rev. Lett. 130, 268203 (2023) · arXiv:2301.11221 · PDF · SI -
Comparative study of force-based classical density functional theory
Phys. Rev. E 107, 034109 (2023) · arXiv:2212.01780 · PDF -
Inhomogeneous steady shear dynamics of a three-body colloidal gel former
J. Chem. Phys. 158, 054908 (2023) · arXiv:2210.07679 · PDF
In Special Collection on Colloidal Gels
2022
-
Force density functional theory in- and out-of-equilibrium
Phys. Rev. E 106, 014115 (2022) · arXiv:2203.01795 · PDF
2021
-
Adaptive Brownian Dynamics
J. Chem. Phys. 155, 134107 (2021) · arXiv:2108.03399 · PDF
Featured, On the Cover of J. Chem. Phys. 155 (13)
2020
-
Fluctuation profiles in inhomogeneous fluids
Phys. Rev. Lett. 125, 268004 (2020) · arXiv:2012.05594 · PDF · SI
Projects
Gallery
Research
-
Neural functionals in statistical mechanics
Using simulation-based machine learning in classical density functional theory, power functional theory and extensions thereof
Publications: [7], [9] (Code and data), [11] (Tutorial), [13] (Code and data), [14] (Code and data), [15] (Code and data), [18] (Code and data), [19] (Code and data)
Poster, Talk in the Lennard-Jones Centre discussion group -
Applications of gauge invariance and Noether's theorem in statistical mechanics
Investigating the invariance of statistical mechanical observables in many-body systems and its ramifications for constructing sum rules and simulation algorithms
Publications: [6], [10], [12], [16], [20]
Software
-
MBD
A simulation tool for classical many-body dynamics
Code, Docs, Used in publications [2], [3], [4], [5], [6], [7], [9], [10], [12], [13], [14], [15], [17], [18] -
ClassicalDFT.jl
A Julia package for classical density functional theory
Code, Docs, Used in publications [9], [18] -
aufwin.de
Glider weather forecasts for central Germany generated with WRF and RASP
Code: Web app, Forecast generation
CV
Education
-
10/2020 – 05/2024
Doctor of Science (Physics) | Dr. rer. nat.
University of Bayreuth-
Thesis: Connecting simulations, functionals and machine learning to describe correlations and forces in equilibrium and nonequilibrium fluids
EPub Bayreuth · PDF
-
Thesis: Connecting simulations, functionals and machine learning to describe correlations and forces in equilibrium and nonequilibrium fluids
-
10/2017 – 03/2020
Master of Science (Physics) | M. Sc.
University of Bayreuth-
Thesis: One-body measures of entropy and fundamental measure theory for hard spheres
PDF
-
Thesis: One-body measures of entropy and fundamental measure theory for hard spheres
-
10/2014 – 09/2017
Bachelor of Science (Physics) | B. Sc.
University of Bayreuth-
Thesis: Sedimentationsdynamik asymmetrischer Mikroteilchen (Sedimentation dynamics of asymmetric microparticles)
PDF
-
Thesis: Sedimentationsdynamik asymmetrischer Mikroteilchen (Sedimentation dynamics of asymmetric microparticles)
Employment
-
since 10/2020
Research Associate
University of Bayreuth, Bayreuth- Research on the statistical mechanics of fluids and soft matter in the group of Prof. Matthias Schmidt
- Teaching: organization of courses and tutorials (Mathematical methods for physicists, Nonequilibrium statistical mechanics, Computer simulations of many-body systems, Modern classical density functional theory), preparation of exercise sheets and exams
- Co-supervision of Bachelor and Master projects and theses
-
04/2020 – 09/2020
IT Consultant (Internship)
TNG Technology Consulting GmbH, Munich- Evaluation and optimization of internal email encryption with OpenPGP
- Cooperation with Mozilla/MZLA for developing corresponding feature extensions in Thunderbird
- Support of internal IT department (agile development of in-house software, cloud migration, automation, DevOps)