Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-01-09
Phys.Rev. D66 (2002) 014006
Physics
High Energy Physics
High Energy Physics - Phenomenology
25 pages, 1 figure, LaTex file. Final version appeared in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.66.014006
In the high density low temperature limit, Quantum Chromodynamics (QCD) exhibits a transition to a phase characterized by color superconductivity and by energy gaps in the fermion spectra. Under specific circumstances the gap parameter has a crystalline pattern, breaking translational and rotational invariance. The corresponding phase is the the crystalline color superconductive phase (or {\it LOFF} phase). In the effective theory the fermions couple to the phonon arising from the breaking of rotation and translation invariance. We compute the parameters of the low energy effective lagrangian describing the motion of the free phonon in the high density medium and derive the phonon dispersion law.
Casalbuoni Roberto
Gatto Raoul
Mannarelli Massimo
Nardulli Giuseppe
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