期刊
PHYSICAL REVIEW D
卷 81, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.81.106001
关键词
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资金
- National Natural Science Foundation of China [10775069, 10935001]
- Research Fund for the Doctoral Program of Higher Education [20060284020, 20080284020]
A classical SU(2) Einstein-Yang-Mills theory in (3 + 1)- dimensional anti-de Sitter spacetime is believed to be dual to a p-wave superconductor in (2 + 1)- dimensional flat spacetime. In order to calculate the superconducting coherence length xi of the holographic superconductor near the superconducting phase transition point, we make a perturbative study of the gravity theory analytically. The superconducting coherence length xi is found to be proportional to (1 - T/T-c)(-1/2) near the critical temperature T-c. We also obtain the magnetic penetration depth lambda proportional to (T-c - T)(1/2) by adding a small external homogeneous magnetic field. The results agree with the Ginzburg-Landau theory.
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