出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present a lattice calculation of L10, one of the low energy constants in Chiral Perturbation Theory,
and the charged-neutral pion squared mass splitting, using dynamical overlap fermion. Exact
chiral symmetry of the overlap fermion allows us to reliably extract these quantities from the difference
of the vacuum polarization functions for vector and axial-vector currents. In the context of
the technicolor models, these two quantities are read as the S-parameter and the pseudo-Nambu-
Goldstone boson mass respectively, and play an important role in discriminating the models from
others. This calculation can serve as a feasibility study of the lattice techniques for more general
technicolor gauge theories.
