English

Complex spacing ratios of the non-Hermitian Dirac operator in universality classes AI$^\dagger$ and AII$^\dagger$

High Energy Physics - Lattice 2021-11-09 v1

Abstract

We consider non-Hermitian Dirac operators in QCD-like theories coupled to a chiral U(1) potential or an imaginary chiral chemical potential. We show that in the continuum they fall into the recently discovered universality classes AI^\dagger or AII^\dagger of random matrix theory if the fermions transform in pseudoreal or real representations of the gauge group, respectively. For staggered fermions on the lattice this correspondence is reversed. We verify our predictions by computing spacing ratios of complex eigenvalues, whose distribution is universal without the need for unfolding.

Keywords

Cite

@article{arxiv.2111.04573,
  title  = {Complex spacing ratios of the non-Hermitian Dirac operator in universality classes AI$^\dagger$ and AII$^\dagger$},
  author = {Takuya Kanazawa and Tilo Wettig},
  journal= {arXiv preprint arXiv:2111.04573},
  year   = {2021}
}

Comments

Proceedings of LATTICE 2021, 8 pages, 4 figures