Mass-Induced Crystalline Color Superconductivity

Details Mass-Induced Crystalline Color Superconductivity Mass-Induced Crystalline Color Superconductivity

2001-12-14

arxiv.org/abs/hep-ph/0112206v2

Phys.Rev. D65 (2002) 094022

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 4 figures. v2: very small change only

Scientific paper

10.1103/PhysRevD.65.094022

We demonstrate that crystalline color superconductivity may arise as a result of pairing between massless quarks and quarks with nonzero mass m_s. Previous analyses of this phase of cold dense quark matter have all utilized a chemical potential difference \delta\mu to favor crystalline color superconductivity over ordinary BCS pairing. In any context in which crystalline color superconductivity occurs in nature, however, it will be m_s-induced. The effect of m_s is qualitatively different from that of \delta\mu in one crucial respect: m_s depresses the value of the BCS gap \Delta_0 whereas \delta\mu leaves \Delta_0 unchanged. This effect in the BCS phase must be taken into account before m_s-induced and \delta\mu-induced crystalline color superconductivity can sensibly be compared.

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