论文标题
在有限温度下亚欧马旋转玻色子模型的平衡动力学
Equilibrium Dynamics of the Sub-Ohmic Spin-boson Model At Finite Temperature
论文作者
论文摘要
我们使用全密度矩阵（FDM）数值重归其化组（NRG）方法来计算旋转操作员的平衡动力学相关函数$ c（ω）$ $ c（ω）$ $σ_z$在有限温度下，在有限的温度下，用于亚荷旋转旋转孔模型。在$ c（ω）$的曲线中，在频率$ω_{t} \ sim t $处观察到峰值。曲线与零温度$ c（ω）$合并为$ω\ggΩ_{t} $，并显着偏离零温度曲线的$ω^{\ pm s} $ in $ω\llΩ__{t} $。
We use the full-density matrix (FDM) numerical renormalization group (NRG) method to calculate the equilibrium dynamical correlation function $C(ω)$ of the spin operator $σ_z$ at finite temperature for the sub-Ohmic spin-boson model. A peak is observed at the frequency $ω_{T}\sim T$ in the curve of $C(ω)$. The curve merges with the zero temperature $C(ω)$ in $ω\gg ω_{T}$ and deviate significantly from the power-law form $ω^{\pm s}$ of the zero temperature curve in $ω\llω_{T}$.
