Superconductivity from perturbative one-gluon exchange in high density quark matter

Details Superconductivity from perturbative one-gluon exchange in high density quark matter Superconductivity from perturbative one-gluon exchange in high density quark matter

1999-06-25

arxiv.org/abs/hep-ph/9906512v3

Phys.Rev. D60 (1999) 114033

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 6 figures. I accidentally replaced the paper with an outdated version. This version has typos corrected and will app

Scientific paper

10.1103/PhysRevD.60.114033

We study color superconductivity in QCD at asymptotically large chemical potential. In this limit, pairing is dominated by perturbative one-gluon exchange. We derive the Eliashberg equation for the pairing gap and solve this equation numerically. Taking into account both magnetic and electric gluon exchanges, we find $\Delta\sim g^{-5}\exp(-c/g)$ with $c=3\pi^2/\sqrt{2}$, verifying a recent result by Son. For chemical potentials that are of physical interest, $\mu< 1$ GeV, the calculation ceases to be reliable quantitatively, but our results suggest that the gap can be as large as 100 MeV.

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