English

DLR Equations for the Superstable Bose Gas at any Temperature and Activity

Mathematical Physics 2026-01-19 v3 math.MP Probability

Abstract

We construct a thermodynamic limit for the grand canonical Bose gas in dimension d1d\geqslant1 (in its Feynman-Kac representation) with superstable interaction at any inverse temperature β>0\beta>0 and any chemical potential μR\mu\in\mathbb{R}. Our infinite volume model is naturally a distribution over configurations of finite loops and possibly interlacements. We prove the limiting process to solve a new class of DLR equations involving random permutations and Brownian paths.

Keywords

Cite

@article{arxiv.2410.10225,
  title  = {DLR Equations for the Superstable Bose Gas at any Temperature and Activity},
  author = {Guillaume Bellot and David Dereudre and Mylène Maïda},
  journal= {arXiv preprint arXiv:2410.10225},
  year   = {2026}
}