摘要翻译:
研究了一维各向异性铁磁自旋1/2链在量子临界点附近的实时畴壁动力学。通过数值模拟,我们发现畴壁在Heisenberg-Ising模型中是动态稳定的。在量子临界点附近,畴壁宽度发散为$(\delta-1)^{-1/2}$。
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英文标题:
《Domain Wall Dynamics near a Quantum Critical Point》
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作者:
Shengjun Yuan, Hans De Raedt, Seiji Miyashita
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Materials Science 材料科学
分类描述:Techniques, synthesis, characterization, structure. Structural phase transitions, mechanical properties, phonons. Defects, adsorbates, interfaces
技术,合成,表征,结构。结构相变,力学性质,声子。缺陷,吸附质,界面
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
We study the real-time domain-wall dynamics near a quantum critical point of the one-dimensional anisotropic ferromagnetic spin 1/2 chain. By numerical simulation, we find the domain wall is dynamically stable in the Heisenberg-Ising model. Near the quantum critical point, the width of the domain wall diverges as $(\Delta -1) ^{-1/2}$.
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PDF链接:
https://arxiv.org/pdf/704.0193