Structure change of Cooper pairs in color superconductivity -- Crossover from BCS to BEC ? --
arXiv:hep-ph/0209081 · doi:10.1016/S0375-9474(02)01523-3
Abstract
We discuss a possibility of transition from color superconductivity of the standard BCS type at high density, to Bose-Einstein Condensation (BEC) of Cooper pairs at lower density. Examining two-flavor QCD over a wide range of baryon density, we found the size of a Cooper pair becomes small enough to be comparable to the averaged quark-quark distance at lower density. We also consider the same problem in two-color QCD.
4pages, 2figures, Contribution to the Proceedings of "Quark Matter 2002", Nantes, France, 18-24 Jul 2002
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