Meson Exchange Effect on Color Superconductivity

Details Meson Exchange Effect on Color Superconductivity Meson Exchange Effect on Color Superconductivity

2001-01-17

arxiv.org/abs/hep-ph/0101189v2

Phys.Rev. D64 (2001) 014026

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 1 figure, minor corrections

Scientific paper

10.1103/PhysRevD.64.014026

We investigate the effects of pion and gluon exchanges on the formation of two-flavor color superconductivity at moderate density, $\mu <1 GeV$. The chiral quark model proposed by Manohar and Georgi containing pions as well as gluons is employed to show that the pion exchange reduces substantially the value of the superconducting gap gotten with the gluon exchange only. It turns out that the pion exchanges produce a repulsion between quark-quark pair in a spin and isospin singlet state. We suggest that the phase consisiting of pions, gluons and quarks is one of the candidates of in-medium QCD phase at moderate density.

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