Philipp Aretz

Philipp Aretz

QCD Theorist

Publications

You can also find my articles on my Google Scholar profile.
Selected papers and preprints are listed below. Each entry includes citation details and direct links to paper and BibTeX files where available.

Published

A rigorous Keldysh functional integral for fermions

Published in Journal of Statistical Physics, 193(2), Article 28, 2026

Philipp Benjamin Aretz, Manfred Salmhofer

DOI: 10.1007/s10955-026-03583-5 | arXiv: 2508.01787

We give a mathematically precise foundation for the Keldysh formalism and show that it produces stable, controlled predictions for non-equilibrium fermionic systems.

Recommended citation: Aretz, P. B. and Salmhofer, M. (2026). "A rigorous Keldysh functional integral for fermions." Journal of Statistical Physics, 193(2), 28. https://doi.org/10.1007/s10955-026-03583-5
Download Paper | Download Bibtex

Families of periodic delay orbits

Published in Journal of Differential Equations, 410, 228-250, 2024

Peter Albers, Philipp Aretz, Irene Seifert

DOI: 10.1016/j.jde.2024.07.021 | arXiv: 2304.07550

This paper provides examples of periodic solutions to a certain class of two dimensional differential delay equations. We further investigate geometric properties of the families of solutions.

Recommended citation: Albers, P., Aretz, P., and Seifert, I. (2024). "Families of periodic delay orbits." Journal of Differential Equations, 410, 228-250. https://doi.org/10.1016/j.jde.2024.07.021
Download Paper | Download Bibtex