轨道折叠边界条件下的不稳定π介子：格点量子色动力学中一种显式降噪构造
Restless pions from orbifold boundary conditions: an explicit construction for noise reduction in lattice QCD
摘要：
多重子粒子加速器中的信噪比呈指数下降是基于QCD的核力第一性原理计算的主要障碍。最近，我们提出了一个轨道边界条件（“不安分的π介子”），可以显着改善这一问题。在这里，我们进一步发展的想法，提出了一个明确的算法，可以用于纯周期性的，“现成的”规范配置。我们还讨论了有限体积修正与新的边界条件和使用的“Luscher公式”的相移。
英文摘要：
The exponentially decreasing signal to noise ratio in multibaryon correlators is the main obstacle to a first principles, QCD-based calculation of the nuclear force. Recently, we have proposed an orbifold boundary condition ("restless pions") that can dramatically improve this matter. Here we develop the idea further by proposing an explicit algorithm that can be used with purely periodic, "off the shelf" gauge configurations. We also discuss finite volume corrections with the new boundary conditions and the use of the "Luscher formula'' for the phase shifts.
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。
