出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The construction of massless Majorana fermions with chiral Yukawa couplings on the lattice
is considered. We find topological obstructions tightly linked to those underlying the Nielsen-
Ninomiya no-go theorem. In contradistinction to chiral fermions the obstructions originate only
from the combination of the Dirac action and the Yukawa term. These findings are used to construct
a chirally invariant lattice action. We also show that the path intgral of this theory is given
by the Pfaffian of the corresponding Dirac operator.
