Staggered domain wall fermions

TL;DR

Staggered Domain Wall Fermions (SDWF) merge the benefits of staggered and domain wall fermions, offering improved chiral symmetry properties for lattice QCD simulations, especially in thermodynamics.

Contribution

This paper introduces SDWF, a new fermion formulation that combines staggered and domain wall fermions, enhancing chiral symmetry in lattice QCD.

Findings

SDWF describe four flavors with exact U(1)xU(1) symmetry.

Full SU(4)xSU(4) symmetry is recovered with increasing extra dimension size.

Preliminary discussion of SDWF in interacting theories.

Abstract

Staggered Domain Wall Fermions (SDWF) combine the attractive chiral properties of staggered fermions with those of domain wall fermions. SDWF describe four flavors with exact U(1)xU(1) flavor chiral symmetry. An extra lattice dimension is introduced and the full SU(4)xSU(4) flavor chiral symmetry is recovered as its size is increased. Here, the free theory of SDWF is described and a preliminary discussion of the interacting case is presented. SDWF may be well suited for numerical simulation of lattice QCD thermodynamics.