出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present simulation results for the 2-flavour Schwinger model with dynamical overlap
fermions. In particular we apply the overlap hypercube operator at seven light fermion masses. In
each case we collect sizable statistics in the topological sectors 0 and 1. Since the chiral condensate
S vanishes in the chiral limit, we observe densities for the microscopic Dirac spectrum, which
have not been addressed yet by Random Matrix Theory (RMT). Nevertheless, by confronting the
averages of the lowest eigenvalues in different topological sectors with chiral RMT in unitary
ensemble we obtain — for the very light fermion masses — values for S that follow closely the
analytical predictions in the continuum.
