Neutral Color Superconductivity and Pseudo-Goldstone Modes
Lianyi He, Meng Jin, Pengfei Zhuang
Abstract
Four of the five expected Goldstone modes, which will be eaten up by gauge fields, in neutral two-flavor color superconductor are actually pseudo-Goldstone modes, and their degenerated mass is exactly the magnitude of the color chemical potential, which is introduced to guarantee the color neutrality at moderate baryon density.
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