出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present rst results of a mixed action project. We analyze gauge congurations generated with
two avors of dynamical twisted mass fermions. Neuberger's overlap Dirac operator is used for
the valence sector. The various choices in the setup of the simulation are discussed. We employ
chiral perturbation theory to describe the effects of using different actions in the sea and valence
sector at non-zero lattice spacing.
