English

Complete solution of the LSZ Model via Topological Recursion

Mathematical Physics 2025-04-08 v1 math.MP

Abstract

We prove that the Langmann-Szabo-Zarembo (LSZ) model with quartic potential, a toy model for a quantum field theory on noncommutative spaces grasped as a complex matrix model, obeys topological recursion of Chekhov, Eynard and Orantin. By introducing two families of correlation functions, one corresponding to the meromorphic differentials ωg,n\omega_{g,n} of topological recursion, we obtain Dyson-Schwinger equations that eventually lead to the abstract loop equations being, together with their pole structure, the necessary condition for topological recursion. This strategy to show the exact solvability of the LSZ model establishes another approach towards the exceptional property of integrability in some quantum field theories. We compare differences in the loop equations for the LSZ model (with complex fields) and the Grosse-Wulkenhaar model (with hermitian fieldss) and their consequences for the resulting particular type of topological recursion that governs the models.

Cite

@article{arxiv.2205.12166,
  title  = {Complete solution of the LSZ Model via Topological Recursion},
  author = {Johannes Branahl and Alexander Hock},
  journal= {arXiv preprint arXiv:2205.12166},
  year   = {2025}
}

Comments

63 pages, 6 figures

R2 v1 2026-06-24T11:27:15.757Z