出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要:In staggered QCD, many staggered baryons correspond to each physical state. Taste violations
lift the continuum degeneracies of the baryons and introduce nonzero off-diagonal elements in the
mass matrix. While presenting no problem of principle, these splittings and mixings complicate
analyses of simulation results. However, in special cases operators with good SU(3) quantum
numbers can be used to circumvent the splittings and mixings. I review what has been learned
from staggered chiral perturbation theory, outline a program of attack for the amenable cases,
and summarize the present status of work on the staggered chiral forms and operators with good
SU(3)×GTS quantum numbers.