Quantum magnetism and criticality

被引:398
作者
Sachdev, Subir [1 ]
机构
[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
基金
美国国家科学基金会;
关键词
D O I
10.1038/nphys894
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Magnetic insulators have proved to be fertile ground for studying new types of quantum many-body state, and I survey recent experimental and theoretical examples. The insights and methods also transfer to novel superconducting and metallic states. Of particular interest are critical quantum states, sometimes found at quantum phase transitions, which have gapless excitations with no particle- or wave-like interpretation, and control a significant portion of the finite-temperature phase diagram. Remarkably, their theory is connected to holographic descriptions of Hawking radiation from black holes.
引用
收藏
页码:173 / 185
页数:13
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