English

Exchange and exclusion in the non-abelian anyon gas

Mathematical Physics 2026-03-20 v2 Quantum Gases math.MP Spectral Theory

Abstract

We review and develop the many-body spectral theory of ideal anyons, i.e. identical quantum particles in the plane whose exchange rules are governed by unitary representations of the braid group on NN strands. Allowing for arbitrary rank (dependent on NN) and non-abelian representations, and letting NN \to \infty, this defines the ideal non-abelian many-anyon gas. We compute exchange operators and phases for a common and wide class of representations defined by fusion algebras, including the Fibonacci and Ising anyon models. Furthermore, we extend methods of statistical repulsion (Poincar\'e and Hardy inequalities) and a local exclusion principle (also implying a Lieb-Thirring inequality) developed for abelian anyons to arbitrary geometric anyon models, i.e. arbitrary sequences of unitary representations of the braid group, for which two-anyon exchange is nontrivial.

Keywords

Cite

@article{arxiv.2009.12709,
  title  = {Exchange and exclusion in the non-abelian anyon gas},
  author = {Douglas Lundholm and Viktor Qvarfordt},
  journal= {arXiv preprint arXiv:2009.12709},
  year   = {2026}
}

Comments

79 pages, 10 figures. V2: Added Corollary 5.6 and Remark 5.9; minor corrections and clarifications