Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-12-08
Phys.Rev.D59:094019,1999
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, REVTEX, uses epsf
Scientific paper
10.1103/PhysRevD.59.094019
We argue that in quark matter at high densities, the color magnetic field remains unscreened and leads to the phenomenon of color superconductivity. Using the renormalization group near the Fermi surface, we find that the long-range nature of the magnetic interaction changes the asymptotic behavior of the gap $\Delta$ at large chemical potential $\mu$ qualitatively. We find $\Delta\sim\mu g^{-5}\exp(-{3\pi^2\over\sqrt{2}}{1\over g})$, where $g$ is the small gauge coupling. We discuss the possibility of breaking rotational symmetry by the formation of a condensate with nonzero angular momentum, as well as interesting parallels to some condensed matter systems with long-range forces.
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