Collective modes in color superconductors
Masaharu Iwasaki, Keiji Yamaguchi, Osamu Miyamura
DOI 10.1103/PhysRevD.66.094008 · Physical Review D
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Abstract
We investigate the fluctuation effects of a gap parameter in color superconductors. The fluctuation modes are described as the collective motion of a diquark field. One of the modes is a massless Nambu-Goldstone boson and the other is a diquark boson whose mass is twice the gap energy. It is also shown that in the normal phase the fluctuation mode becomes a precursory (soft) mode whose mass and decay width are calculated near the critical temperature. We discuss the temperature dependence of such quantities in detail.
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