Tropical field theory

by Paul Balduf (Leipzig MPI MiS)

Thursday 27 Aug 2026, 14:15 → 15:45 Europe/Berlin

Abbeanum/1-HS2 - Straubel-HS (TPI, FSU Jena)

Tropical field theory is a new class of model quantum field theories that initially arises from a tropicalization of polynomials in Schwinger-parametric Feynman integrals. By now, several alternative interpretations have been discovered: It is a combinatorial generalization of zero-dimensional field theory, it coincides with a local potential approximation of the functional renormalization group, and it is an approximation and bound to ordinary Feynman integrals. I will explain some of these points and indicate how tropical field theory is useful for non-tropical QFT. Based upon https://arxiv.org/abs/2512.21091 and work in progress.