arXiv 2107.035582021-07nucl-th

温伯格做了什么？关于温伯格关于“手征拉格朗日的核力”的论文所做和所未完成的工作的思考

What hath Weinberg wrought? Reflections on what Weinberg's papers on 'Nuclear Forces from Chiral Lagrangians' did and did not accomplish

Daniel R. Phillips

备注：: 20 pages, 3 figures. Contribution to Special Issue of Few-Body Systems: Celebrating 30 years of Steven Weinberg's papers on Nuclear Forces from Chiral Lagrangians. v2: Contains updated discussion of M_N scaling and corrects statements in v1 about Weinberg's choice of regularization and subtraction scheme. v3: Version accepted for publication. Includes additional references to recent work
DOI：: 10.1007/s00601-021-01699-w

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摘要：

本文讨论了温伯格将手征拉格朗日量应用于核物理的某些遗产：（1）利用手征展开来组织π介子和光子与原子核的相互作用;（2）为什么以及如何将手征拉格朗日量导出的势插入薛定谔方程这一备受争议的问题;（3）“无π介子EFT”的出现，作为诊断存在于大小非常不同的量子少体系统中的普遍相关性的工具，也许最重要的是，（4）对核物理计算的预期的认识论转变。

英文摘要：

I discuss selected legacies of Weinberg's application of chiral Lagrangians to nuclear physics: (1) the use of the chiral expansion to organize the interaction of pions and photons with a nucleus; (2) the much-debated question of why and how the potential derived from a chiral Lagrangian should be inserted in the Schrodinger equation; (3) the emergence of "pionless EFT" as a tool for diagnosing universal correlations that are present in quantum few-body systems of very different sizes, and, perhaps most important of all, (4) an epistemological shift in what is expected of a nuclear-physics calculation.

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