期刊
NEW JOURNAL OF PHYSICS
卷 7, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/7/1/258
关键词
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We show that magnetic susceptibility can reveal spin entanglement between individual constituents of a solid, while magnetization describes their local properties. We then show that magnetization and its variance ( equivalent to magnetic susceptibility for a wide class of systems) satisfy complementary relation in the quantum-mechanical sense. It describes sharing of ( quantum) information in the solid between spin entanglement and local properties of its individual constituents. Magnetic susceptibility is shown to be a macroscopic ( thermodynamical) spin entanglement witness that can be applied without complete knowledge of the specific model ( Hamiltonian) of the solid.
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