A practical scheme for SU(4) flavour symmetry breaking in lattice gauge theories
Abstract
SU(4) flavour symmetry arises naturally in the continuum limit of free Susskind fermions on a fourdimensional lattice. It may be broken by including a mass term for each flavour. These is an optimum choice for the lattice mass term in the gauge theory, which breaks the flavour symmetry to SU(2) without increasing the nonlocality of the action.
 Publication:

Physics Letters B
 Pub Date:
 August 1983
 DOI:
 10.1016/03702693(83)900783
 Bibcode:
 1983PhLB..128...83B