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Multi-quark interactions with a globally stable vacuum

Alexander A. Osipov·Brigitte Hiller·Joao da Providencia
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Abstract

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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Alexander A. Osipov, Brigitte Hiller, Joao da Providencia. 2006-01-16. Multi-quark interactions with a globally stable vacuum. https://doi.org/10.1016/j.physletb.2006.01.008

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