QCD with two flavors of Wilson fermions: The QCD vacuum, the Aoki vacuum and other vacua

V. Azcoiti, G. Di Carlo, A. Vaquero

We discuss the vacuum structure of QCD with two flavors of Wilson fermions. We derive two possible scenarios: (i) If the spectral density ${\rho }_U(\lambda ,\kappa )$ of the overlap hamiltonian in a…