ar X iv : n uc l - th / 0 20 80 70 v 1 2 9 A ug 2 00 2 1 Effective Theory of the Color - Flavor - Locked Phase
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چکیده
What is the ground state of ordinary hadronic matter if it is compressed to baryon densities several times larger than nuclear matter saturation density? This theoretical question, which has important applications to the physics of neutron stars, has led to the discovery of several novel and unusual phases of QCD. At zero baryon density chiral symmetry is broken by a condensate of quark-anti-quark pairs. If the baryon density is large then condensation in the quark-anti-quark channel is suppressed. Instead, attractive interactions between two quarks in a color anti-symmetric wave function lead to diquark condensation and color superconductivity [1–3]. The global symmetries of color superconducting quark matter depend on the density, the number of quark flavors, and their masses. In the physically relevant case of three light quark flavors a particularly symmetric phase exists, color-flavor-locked (CFL) quark matter [4]. This phase is believed to be the true ground state of strange quark matter at very large density. The CFL phase is characterized by the order parameter
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تاریخ انتشار 2002