Generalized Pions in Dense QCD

Details Generalized Pions in Dense QCD Generalized Pions in Dense QCD

1999-10-29

arxiv.org/abs/hep-ph/9910550v3

Phys.Lett. B473 (2000) 126-135

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 4 figures, version to be published in PLB

Scientific paper

10.1016/S0370-2693(99)01420-3

QCD superconductors in the color-flavor-locked (CFL) phase sustain light Goldstone modes (that will be referred to as generalized pions) that can be described as pairs of particle and/or hole excitations around a gapped Fermi surface. In weak coupling and to leading logarithm accuracy, their form factor, mass and decay constant can be evaluated exactly. These modes are found to satisfy an axial-Ward-identity, constraining the mass of the Goldstone modes in the CFL phase.

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