论文标题
晶格QCD的Pion Electric极化能力
Pion electric polarizabilities from lattice QCD
论文作者
论文摘要
我们报告了物理脉冲质量的锥形电偏光率$α_π$的第一个原理计算。首先，我们得出主配方，该公式将斜向极化与位置空间Hadronic Compton Tensor，$ \langleπ| J_μ（X）J_ν（0）| π\ rangle $。主公式的有限体积误差被晶格的空间范围指数抑制。然后，使用直接在物理亲质量下的域壁费（DWF）计算耐达的张量。仪表合奏是由RBC-UKQCD合作生成的。
We report a first principle lattice calculation of the pion electric polarizability $α_π$ at the physical pion mass. First, we derive the master formula, which relates the pion polarizabilities with the position space hadronic Compton tensor, $\langle π| J_μ(x) J_ν(0) | π\rangle$. The finite volume error of the master formula is exponentially suppressed by the spatial extent of the lattice. Then, the hadronic tensor is calculated using domain wall fermions (DWF) directly at physical pion mass. The gauge ensembles are generated by the RBC-UKQCD collaborations.
