出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：One exciting possibility of new physics beyond the Standard Model is that the fundamental Higgs
sector is replaced by a strongly-interacting gauge theory, known as technicolor. A viable theory
must break chiral symmetry dynamically, like in QCD, to generate Goldstone bosons which become
the longitudinal components of the W± and Z. By measuring the eigenvalues of the Dirac
operator, one can determine if chiral symmetry is in fact spontaneously broken. We simulate
SU(3) gauge theory with ns = 2 and 3 staggered flavors in the fundamental representation, corresponding
to Nf = 8 and 12 flavors in the continuum limit. Although our first findings show that
both theories are consistent with dynamically broken chiral symmetry and QCD-like behavior,
flavor breaking effects in the spectrum may require further clarifications before final conclusions
can be drawn. We also compare various improved staggered actions, to suppress this potentially
large flavor breaking.
