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Prog. Theor. Phys. Supplement No.153 (2004) pp. 230-240

[ Full Text PDF : FREE ACCESS (187K) ]

Ginzburg-Landau Approach to Color Superconductivity

Kei Iida,1 Gordon Baym,2 Taeko Matsuura3 and Tetsuo Hatsuda3

1The Institute of the Physical and Chemical Research (RIKEN), Wako 351-0198, Japan
2Department of Physics, University of Illinois at Urbana-Champaign,
1110 West Green Street, Urbana, Illinois 61801-3080, U.S.A.
3Department of Physics, University of Tokyo, Tokyo 113-0033, Japan

(Received November 26, 2003)

Abstract:

We study, within Ginzburg-Landau theory, the equilibrium properties of a color superconductor of three-flavor massless quarks near the transition temperature. We first draw the phase diagram in the space of the parameters controlling the thermodynamic-potential terms of fourth order in the pairing gap. Within the color and flavor antitriplet channel with zero total angular momentum, the phase diagram contains the color-flavor locked and two-flavor pairing phases; the limit of weak coupling is included in the color-flavor locked phase. The responses of the color-flavor locked and two-flavor condensates to external magnetic fields and rotation are then investigated by calculating the induced supercurrents. In equilibrium, rotation can produce vortices only in the color-flavor locked condensate. We finally discuss the effects of fluctuations in gauge fields and order parameters on the finite temperature phase transition.


URL : http://ptp.ipap.jp/link?PTPS/153/230/
DOI : 10.1143/PTPS.153.230

[ Full Text PDF : FREE ACCESS (187K) ] Citation:

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