论文标题
二维二聚体量子抗铁磁铁的通用量的数值
The numerical value for a universal quantity of a two-dimensional dimerized quantum antiferromagnet
论文作者
论文摘要
使用量子蒙特卡洛模拟（QMC）计算了与量子临界方案相关的通用量的数值，即$χ_UC^2/T $。这里$χ_u$，$ c $和$ t $分别是统一的敏感性，自旋波速度和温度。通过在适度低温下模拟大型晶格，我们发现$χ_UC^2/t \ sim 0.32 $。我们对$χ_UC^2/T $的估计与相关的分析预测偏离，但与其他2D二聚Spin-1/2抗铁磁铁的数值计算一致。
The numerical value of a universal quantity associated with the quantum critical regime, namely $χ_u c^2/T$, for a two-dimensional (2D) dimerized spin-1/2 antiferromagnet is calculated using the quantum Monte Carlo simulations (QMC). Here $χ_u$, $c$, and $T$ are the uniform susceptibility, the spin-wave velocity, and the temperature, respectively. By simulating large lattices at moderately low temperatures, we find $χ_u c^2/T \sim 0.32$. Our estimation of $χ_u c^2/T$ deviates from the related analytic prediction but agrees with recent numerical calculations of other 2D dimerized spin-1/2 antiferromagnets.
