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Prog. Theor. Phys. Vol. 104 No. 5 (2000) pp. 1041-1051

[ Full Text PDF : FREE ACCESS (132K) ]

Anti-Parallel Spin Pairing in Color Superconductivity

Masaharu Iwasaki, Satoshi Ishikawa and Take-aki Tanaka

Physics Department, Kochi University, Kochi 780-8520, Japan

(Received July 7, 2000)

Abstract:

We investigate helicity states of Cooper pairs in quark matter on the basis of a QCD-like theory. The Cooper pair consists of spin-triplet states with one-flavor quark matter if an s-wave and a color-antisymmetric state are assumed. There are two types of spin pairing schemes, parallel and anti-parallel spin pairing. The gap equations are derived in both cases and solved numerically. It is shown that the energy gap in the anti-parallel spin pairing case is larger than that in the parallel case. This is caused by the color-magnetic interaction. It is concluded that the anti-parallel spin pairing scheme is more stable than the parallel one.


URL : http://ptp.ipap.jp/link?PTP/104/1041/
DOI : 10.1143/PTP.104.1041

[ Full Text PDF : FREE ACCESS (132K) ] Citation:

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