2 papers
math-ph2026
A Multi-Body Dobrushin-Sokal Criterion -- Part II
Jan Philipp Neumann
We prove a sufficient condition for the absolute convergence of Mayer cluster expansions of log-partition and correlation functions applicable to lattice gases with possibly comple…
math-ph2025
A Multi-Body Dobrushin-Sokal Criterion -- Part I
Jan Philipp Neumann
We derive a sufficient condition for zero-freeness of partition functions applicable to lattice gases with possibly complex-valued multi-body interactions. This includes the case o…