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arXiv 1602.00155math-phmath.MP
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Heisenberg铁磁体的低温自旋波近似

Low-Temperature Spin-Wave Approximation for the Heisenberg Ferromagnet

M. Correggi, A. Giuliani, R. Seiringer

摘要:

本文研究了三维量子海森堡铁磁体的低温热力学性质,讨论了自旋$ S \geq 1/2 $为任意值的情况。我们报告的自旋波近似的激发光谱的有效性的严格证明,在第一个非平凡的贡献的水平上的自由能的逆温度$ β\to \infty $。

英文摘要:

We study the low temperature thermodynamics of the quantum Heisenberg ferromagnet in three dimension for any value of the spin $ S \geq 1/2 $. We report on a rigorous proof of the validity of the spin-wave approximation for the excitation spectrum, at the level of the first non-trivial contribution to the free energy as the inverse temperature $ β\to \infty $.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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