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A note on color neutrality in NJL-type models

Michael Buballa·Igor A. Shovkovy
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Abstract

By referring to the underlying physics behind the color charge neutrality condition in quark matter, we discuss how this condition should be properly imposed in NJL-type models in a phenomenologically meaningful way. In particular, we show that the standard assumption regarding the use of two color chemical potentials, chosen in a very special way, is not justified in general. When used uncritically, such an approach leads to wrong or unphysical conclusions.

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Michael Buballa, Igor A. Shovkovy. 2005-09-02. A note on color neutrality in NJL-type models. https://doi.org/10.1103/physrevd.72.097501

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