Numerical solution of the color superconductivity gap in a weak coupling constant
نویسندگان
چکیده
منابع مشابه
Color superconductivity in weak coupling
Cooper’s theorem [1–3] implies that if there is an attractive interaction in a cold Fermi sea, the system is unstable with respect to formation of a particle-particle condensate. In QCD, single-gluon exchange between quarks of different color generates an attractive interaction in the color-antitriplet channel [4]. Thus, it appears unavoidable that color superconductivity occurs in dense quark ...
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We have calculated the polarization tensor Π ab (P ), a, b = 1, . . . , 8, γ, for gluons and photons in different colorsuperconducting phases. We have explicitly computed its zero-energy, low-momentum limit for the two-flavor color superconducting (2SC), color-flavor-locking (CFL), polar, and color-spin-locking (CSL) phases, which yield the Debye and Meissner masses. These masses determine the ...
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Recent developments in weak-coupling color superconductivity are reviewed. These developments are as follows. The mean field gap equation is solved for most common superconducting phases up to subleading order; BCS relation is found to be violated in color-flavor-locking and color-spin-locking phases due to the two-gaps structure of the order parameter; The Debye and Meissner masses of gluons a...
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Present computations of the gap of color superconductivity in weak coupling assume that the quarks which participate in the condensation process are infinitely long-lived. However, the quasiparticles in a plasma are characterized by having a finite lifetime. In this article we take into account this fact to evaluate its effect in the computation of the color gap. By first considering the Schwin...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2003
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.68.034901