Approximate dynamical symmetry in lattice quantum chromodynamics
- 1 September 1980
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 22 (5), 1190-1197
- https://doi.org/10.1103/physrevd.22.1190
Abstract
We discuss the phenomenological implications of an approximate SU(6)×SU(6)×U(1) symmetry of hadron physics which remains after dynamical symmetry breaking in the strong-coupling lattice gauge theory. This symmetry is similar to but differs in an essential fashion from previous versions of SU(6) × SU(6) × or . The difference resolves some of the problems of the older schemes—for example, although we obtain the "good" result , we avoid the "bad" result . We find that mesons are better approximated as irreducible representations of an than static SU(6). Vector mesons are pseudo-Goldstone bosons in our scheme, which explains why the sum rules for their masses should be written in terms of mass squared, like those of the pseudoscalars.
Keywords
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