Self-consistent parametrization of the two-flavor isotropic color-superconducting ground state

Details Self-consistent parametrization of the two-flavor isotropic color-superconducting ground state Self-consistent parametrization of the two-flavor isotropic color-superconducting ground state

2001-05-09

arxiv.org/abs/hep-ph/0105079v1

Phys.Rev.D65:014018,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 3 figures

Scientific paper

10.1103/PhysRevD.65.014018

Lack of Lorentz invariance of QCD at finite quark chemical potential in general implies the need of Lorentz non-invariant condensates for the self-consistent description of the color-superconducting ground state. Moreover, the spontaneous breakdown of color SU(3) in this state naturally leads to the existence of SU(3) non-invariant non-superconducting expectation values. We illustrate these observations by analyzing the properties of an effective 2-flavor Nambu-Jona-Lasinio type Lagrangian and discuss the possibility of color-superconducting states with effectively gapless fermionic excitations. It turns out that the effect of condensates so far neglected can yield new interesting phenomena.

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