摘要翻译:
利用密度矩阵重整化群技术,验证了新近提出的具有现场各向异性项的自旋一XXZ自旋链的保真磁化率标度关系。此外,根据保真度灵敏度和纠缠熵的结果,通过适当的有限尺度分析,确定了临界点和相应的临界指数,这些值与文献中的结果一致。因此,我们的工作为保真度在量子相变探测中的应用提供了数值支持。
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英文标题:
《Scaling Properties of Fidelity in Spin-one Anisotropic Model》
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作者:
Yu-Chin Tzeng and Min-Fong Yang
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最新提交年份:
2008
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分类信息:
一级分类:Physics 物理学
二级分类:Quantum Physics 量子物理学
分类描述:Description coming soon
描述即将到来
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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:
By means of the density matrix renormalization group technique, the scaling relation of the fidelity susceptibility proposed recently is verified for the spin-one XXZ spin chain with an on-site anisotropic term. Moreover, from the results of both the fidelity susceptibility and the entanglement entropy, the critical points and some of the corresponding critical exponents are determined through a proper finite-size scaling analysis, and these values agree with the findings in the literature. Thus our work provides a numerical support of the use of the fidelity in detecting quantum phase transitions.
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PDF链接:
https://arxiv.org/pdf/709.1518