Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-08-04
Phys.Rev. D61 (2000) 114012
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, 3 figures, revtex, details and discussion expanded
Scientific paper
10.1103/PhysRevD.61.114012
Color superconductivity is a possible phase of high density QCD. We present a systematic derivation of the transition temperature, T_C, from the QCD Lagrangian through study of the di-quark proper vertex. With this approach, we confirm the dependence of T_C on the coupling g, namely $T_C \sim \mu g^{-5} e^{-\kappa/g}$, previously obtained from the one-gluon exchange approximation in the superconducting phase. The diagrammatic approach we employ allows us to examine the perturbative expansion of the vertex and the propagators. We find an additional O(1) contribution to the prefactor of the exponential from the one-loop quark self energy and that the other one-loop radiative contributions and the two gluon exchange vertex contribution are subleading.
Brown William E.
Liu James T.
Ren Hai-cang
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