Transition temperature to the superconducting phase of QCD at high baryon density
- Department of Physics, The Rockefeller University, 1230 York Avenue, New York, New York 10021 (United States)
- Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)
Recent interest in the study of color superconductivity has focused on the regime of high baryon density where perturbative QCD may be employed. Based on the dominant one-gluon-exchange interaction, both the transition temperature and zero temperature gap have been determined to leading order in the coupling g. While the leading non-BCS behavior T{sub C}{approx}{mu}g{sup -5}e{sup -{kappa}}{sup /g} is easily obtained, the pre-exponential factor has proved more difficult to evaluate. Focusing on the transition temperature, we present a perturbative derivation of this factor, exact to leading order in g. This approach is first motivated by the study of a toy model and involves working to second order in the perturbative expansion. We compare this result to the zero temperature gap. Additionally, we extend the analysis to the case of higher angular momentum for longitudinal and transverse quark pairing. (c) 2000 The American Physical Society.
- OSTI ID:
- 20217530
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 62, Issue 5; Other Information: PBD: 1 Sep 2000; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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