Staggered domain wall fermions

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) × U(1) flavor chiral symmetry. An extra lattice dimension is introduced and the full SU(4) × SU(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.