The QCD chiral transition, $\ua$ symmetry and the Dirac spectrum using domain wall fermions

Understand

We report on a study of the finite-temperature QCD transition region for temperatures between 139 and 196 MeV, with a pion mass of 200 MeV and two space-time volumes: $24^3\times8$ and $32^3\times8$, where the larger volume varies in linear size between 5.6 fm (at T=139 MeV) and 4.0 fm (at T=195 MeV).

• These results are compared with the results of an earlier calculation using the same action and quark masses but a smaller, $16^3\times8$ volume.
• The chiral domain wall fermion formulation with a combined Iwasaki and dislocation suppressing determinant ratio gauge action are used.
• This lattice action accurately reproduces the $\sua$ and $\ua$ symmetries of the continuum.