Phys. Rev. D 66, 094008 (2002) [6 pages]Collective modes in color superconductorsReceived 30 July 2002; published 22 November 2002 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. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.66.094008
DOI:
10.1103/PhysRevD.66.094008
PACS:
24.85.+p, 12.38.-t, 12.39.-x
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