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Leading order relativistic chiral nucleon-nucleon interaction 被引量:1
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作者 任修磊 李凯文 +3 位作者 耿立升 龙炳蔚 Peter Ring 孟杰 《Chinese Physics C》 SCIE CAS CSCD 2018年第1期97-106,共10页
Motivated by the successes of relativistic theories in studies of atomic/molecular and nuclear systems and the need for a relativistic chiral force in relativistic nuclear structure studies, we explore a new relativis... Motivated by the successes of relativistic theories in studies of atomic/molecular and nuclear systems and the need for a relativistic chiral force in relativistic nuclear structure studies, we explore a new relativistic scheme to construct the nucleon-nucleon interaction in the framework of covariant chiral effective field theory. The chiral interaction is formulated up to leading order with covariant power counting and a Lorentz invariant chiral Lagrangian.We find that the relativistic scheme induces all six spin operators needed to describe the nuclear force. A detailed investigation of the partial wave potentials shows a better description of the;S——0 and;P;phase shifts than the leading order Weinberg approach, and similar to that of the next-to-leading order Weinberg approach. For the other partial waves with angular momenta J≥1, the relativistic results are almost the same as their leading order non-relativistic counterparts. 展开更多
关键词 covariant chiral perturbation theory nucleon-nucleon interaction relativistic scattering equation
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