出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We study the ‘spectral projector’ method for the computation of the chiral condensate and the topological susceptibility, using Nf = 2+1+1 dynamical flavors of maximally twisted mass Wilson fermions. In particular, we perform a study of the quark mass dependence of the chiral condensate S and topological susceptibility ctop in the range 270 MeV < mp < 500 MeV and compare our data with analytical predictions. In addition, we compute ctop in the quenched approximation where we match the lattice spacing to the Nf = 2+1+1 dynamical simulations. Using the Kaon, h and h0 meson masses computed on the Nf = 2+1+1 ensembles, we then perform a preliminary test of the Witten-Veneziano relation.
