科研之友
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摘要
We study a Nambu-Jona-Lasinio (NJL) type model with two-flavor quark matter in beta-equilibrium. It turns out that the system develops instabilities in the dispersion relations of the diquark fields, i.e., the velocity squared upsilon(2) becomes negative in a certain region of the electron chemical potential. The critical point is the same as that of the chromomagnetic instability. The results imply the existence of spatially inhomogeneous diquark condensates in the genuine vacuum. We also discuss gauge equivalent classes between the inhomogeneous diquark condensates and gluon condensates.
- 出版日期2006-11-2
