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Cutoff-independent regularization of four-fermion interactions for color superconductivity
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We implement a cutoff-independent regularization of four-fermion interactions to calculate the color-superconducting gap parameter in quark matter. The traditional cutoff regularization has difficulties for chemical potentials \mu of the order of the cutoff \Lambda, predicting in particular a vanishing gap at \mu \sim \Lambda. The proposed cutoff-independent regularization predicts a finite gap at high densities and indicates a smooth matching with the weak coupling QCD prediction for the gap at asymptotically high densities.
Forward citations
Cited by 3 Pith papers
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Renormalizing the Quark-Meson-Diquark Model
Renormalized and two RG-consistent versions of the Quark-Meson-Diquark model reproduce the BCS relation and Stefan-Boltzmann limit at high density, while the sigma-delta scheme violates the BCS relation.
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Interplay between inhomogeneous chiral and crystalline color-superconducting phases in the two-flavor NJL model
In the two-flavor NJL model the wave vectors of the inhomogeneous chiral condensate and the single-plane-wave LOFF diquark condensate are never simultaneously nonzero, so the phases do not coexist.
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Dense and Cold Magnetized Quark Matter: A Review of Magnetic-Field-Independent Regularization and the Medium Separation Scheme
Review of MFIR and MSS schemes showing the superconducting gap stays finite at high chemical potential in magnetized cold quark matter with no zero-temperature transition to normal phase.
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