Paramagnetism-ferromagnetism phase transition in a dyonic black hole

被引:37
作者
Cai, Rong-Gen [1 ,2 ]
Yang, Run-Qiu [3 ]
机构
[1] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
[2] King Abdulaziz Univ, Jeddah 21589, Saudi Arabia
[3] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
来源
PHYSICAL REVIEW D | 2014年 / 90卷 / 08期
基金
中国国家自然科学基金;
关键词
STABILITY;
D O I
10.1103/PhysRevD.90.081901
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Coupling an antisymmetric tensor field to the electromagnetic field in a dyonic Reissner-Nordstrom-anti-de Sitter black hole background, we build a holographic model for the paramagnetism/ferromagnetism phase transition. In the case of zero magnetic field, the time reversal symmetry is broken spontaneously and spontaneous magnetization happens at low temperatures. The critical exponents are in agreement with the ones from mean field theory. In the case of nonzero magnetic field, the model realizes the hysteresis loop of a single magnetic domain and the magnetic susceptibility satisfies the Curie-Weiss law.
引用
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页数:5
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