第一百二十四期HAPOF，Nucleon-nucleon interaction in manifestly Lorentz-invariant ChEFT，任修磊 博士，2025年11月28日

Friday 28 Nov 2025, 15:00 → 17:00 Asia/Shanghai

报告人： 任修磊 博士（山东大学）
报告时间：2025年11月28日 15：00 - 17：00 (北京时间)
会议链接：点击链接

摘要：
We propose a systematic approach to study the nucleon-nucleon interaction by applying time-ordered 
perturbation theory (TOPT) to covariant chiral effective field theory. Diagrammatic rules of TOPT, for the 
first time, are worked out for particles with non-zero spin and interactions involving time derivatives. 
They can be applied to derive chiral potentials at any chiral order. The effective potential, as a sum of 
two-nucleon irreducible time-ordered diagrams, and the scattering equation (Kadyshevsky equation) are 
obtained within the same framework. According to the Weinberg power counting, at leading order, we find that 
NN potential is perturbatively renormalizable, and the corresponding integral equation has unique solutions 
in all partial waves. Through evaluating the two-pion exchange contribution at one-loop level, we formulate 
the NN interaction up to NNLO. The good description of phase shifts and the deuteron properties is achieved 
by treating the full NLO/NNLO potential non-perturbatively.

报告人简介：
任修磊，山东大学研究员、博士生导师。2016年于北京航空航天大学和巴黎萨克雷大学获博士学位，之后在北京大学、
波鸿鲁尔大学、美因茨大学、德国亥姆霍兹重离子研究中心从事博士后、研究助理的工作。2025年4月加入山东大学。
研究领域涉及手征有效场论；核力及重子-重子相互作用；奇特强子态；双光子物理等。至今已在PRD, JHEP, PLB
等期刊发表研究论文50余篇。


特别鸣谢：本届论坛由彭桓武理论物理创新研究中心支持。

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