吸引性奇异势重整化中的接触算符
Contact operators in renormalization of attractive singular potentials
AI总结：
本文研究N N散射3P0通道中手征核力在N2LO的重整化问题，提出通过调整低能常数提取策略，解决例外紫外截断下接触势强度难以确定的问题，使其适用于手征有效场论。
摘要：
我们讨论在手征核力中，若在领头阶非微扰地处理单π交换，则在N N散射的3P0通道中，次次领头阶（N2LO）下的重整化问题。对于所谓的例外紫外动量截断，次领头阶接触势的矩阵元几乎彼此相关，这使得难以从经验相移中确定这些接触势的强度，正如参考文献[1]所报道的那样。我们认为，可以通过调整从数据中推导低能常数的策略来解决这一问题，从而使这些例外截断适用于手征有效场论。
英文摘要：
We discuss renormalization of chiral nuclear forces in the 3P0 channel of N N scattering at next- to-next-to leading order (N2LO) if the one-pion exchange is treated nonperturbatively at leading order. The matrix elements of the subleading contact potentials become nearly dependent of each other for the so-called exceptional ultraviolet momentum cutoff, making it difficult to determine the strengths of those contact potentials from the empirical phase shifts, as reported in Ref. [1]. We argue that this issue can be resolved by adjusting the strategy by which the low-energy constants are deduced from the data, thus making those exceptional cutoffs amenable to chiral effective field theory.
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。
