Perturbative chiral nucleon–nucleon potential for the 3P0 partial wave  

作　　者：Rui Peng Songlin Lyu Bingwei Long 

机构地区：[1]College of Physics,Sichuan University,Chengdu,Sichuan 610065,China

出　　处：《Communications in Theoretical Physics》2020年第9期70-74,共5页理论物理通讯（英文版）

基　　金：supported in part by the National Natural Science Foundation of China (NSFC) under Grant Nos.11775148 and 11735003。

摘　　要：We study perturbativeness of chiral nuclear forces in the 3P0 channel. In previous works, the focus has been on the one-pion exchange, and the applicable window of perturbative pion exchanges has been shown to span from the threshold to center-of-mass momentum k■180 MeV. We will examine,instead, whether the cancellation of short-and long-range parts can sufficiently soften the 3P0 chiral force to make it more amenable to perturbation theory. The result is encouraging, as the combined 3P0 force is shown to be perturbative up to k■280 MeV, covering many nuclear-structure calculations.

关 键 词：chiral nuclear force perturbation theory 3P0 channel 

分 类 号：O571[理学—粒子物理与原子核物理]