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Ginzburg-Landau approach to the three flavor LOFF phase of QCD

R. Casalbuoni·R. Gatto·N. Ippolito·G. Nardulli·M. Ruggieri
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Abstract

We explore, using a Ginzburg-Landau expansion of the free energy, the Larkin-Ovchinnikov-Fulde-Ferrell (LOFF) phase of QCD with three flavors, using the NJL four-fermion coupling to mimic gluon interactions. We find that, below the point where the QCD homogeneous superconductive phases should give way to the normal phase, Cooper condensation of the pairs u-s and d-u is possible, but in the form of the inhomogeneous LOFF pairing.

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R. Casalbuoni, R. Gatto, N. Ippolito, G. Nardulli, M. Ruggieri. 2006-01-16. Ginzburg-Landau approach to the three flavor LOFF phase of QCD. https://doi.org/10.1016/j.physletb.2005.08.123%2010.1016%2Fj.physletb.2006.01.057

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