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arXiv 2112.09804hep-lat
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用蒸馏法研究物理π介子质量下的$K π$散射

$K π$ scattering at physical pion mass using distillation

Nelson Pitanga Lachini, Peter Boyle, Felix Erben, Michael Marshall, Antonin Portelli

摘要:

物理π质量下的散射仍是格点量子色动力学的一个探索领域。这通常涉及通过多粒子振荡器在具有共振的系统上提取激发态。在这种情况下,蒸馏已被证明是有效的涂抹内核和计算工具。出于对蒸馏算子的涂抹轮廓的研究,我们使用具有物理π质量的RBC-UKQCD $N_f=2+1$畴壁费米子晶格,比较了不同数量的拉普拉斯本征向量的随机和精确蒸馏情况。

英文摘要:

Scattering at physical pion mass is still an exploratory field in lattice QCD. This generally involves the extraction of excited states through multi-particle correlators on systems with resonances. In that context, distillation has been demonstrated to be effective both as a smearing kernel and a computational tool. Motivated by the study of the smearing profile of the distillation operator, we compare stochastic and exact distillation cases for different numbers of Laplacian eigenvectors using an RBC-UKQCD $N_f=2+1$ domain-wall fermion lattice with a physical pion mass.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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