Multi-quark interactions with a globally stable vacuum

Details Multi-quark interactions with a globally stable vacuum Multi-quark interactions with a globally stable vacuum

2005-08-04

arxiv.org/abs/hep-ph/0508058v3

Phys.Lett. B634 (2006) 48-54

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 17 pages, 2 figures, version to appear in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2006.01.008

It is shown that $U(3)_L\times U(3)_R$ eight-quark interactions stabilize the
asymmetric ground state of the well-known model with four-quark Nambu --
Jona-Lasinio and six-quark 't Hooft interactions. The result remains when the
reduced SU(3) f\mbox{}lavour symmetry is explicitly broken by the general
current quark mass term with $\hat{m}_u\neq\hat{m}_d\neq\hat{m}_s$.

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