扩展变分法中的插值基解释落后运行状态
Expanding the Interpolator Basis in the Variational Method to Explicitly Account for Backward Running States
摘要：
本文证明了在格点量子色动力学变分方法中，通过扩展量子基，可以明确地解释向后（在时间上）运行态。然后，可以通过选择适当的插值器的线性组合来去除后向运行状态，这显著地改善了信号。原理的证明，它也利用了时移技巧（广义函数笔法），将在一个接近物理π介子质量的$64^4$晶格的例子中进行。
英文摘要：
In this paper, I show that backward (in time) running states can be explicitly accounted for by expanding the interpolator basis in the variational method in lattice QCD. The backward running states can then be removed by choosing an appropriate linear combination of interpolators, which improves the signal significantly. The proof of principle, which also makes use of the Time-Shift Trick (Generalized Pencil-of-Functions method), will be delivered at an example on a $64^4$ lattice close to the physical pion mass.
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