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

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 w...

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Bibliographic Details
Published in:Physics letters. B 2005-10, Vol.627 (1-4), p.89-96
Main Authors: Casalbuoni, R., Gatto, R., Ippolito, N., Nardulli, G., Ruggieri, M.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Nuclear physics
Physics
The physics of elementary particles and fields
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Summary: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.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2005.08.123