出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The rooting procedure commonly used with staggered fermions does not correctly treat nonperturbative
effects associated with gauge field topology. In practice these effects are small for the
physics of flavor non-singlet particles. However large uncontrolled systematic errors are expected
for flavor singlet issues, such as the mass of the eta prime meson. While the relative speed of
the algorithm in large scale simulations may justify its use, the method is an approximation and
should not be promoted as a first principles approach to the strong interactions.
