Journal
CHINESE PHYSICS C
Volume 42, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1674-1137/42/1/014103
Keywords
covariant chiral perturbation theory; nucleon-nucleon interaction; relativistic scattering equation
Categories
Funding
- National Natural Science Foundation of China [11375024, 11522539, 11335002, 11375120]
- DFG [TRR110]
- NSFC [11621131001]
- Major State 973 Program of China [2013CB834400]
- China Postdoctoral Science Foundation [2016M600845, 2017T100008]
- Fundamental Research Funds for the Central Universities
- DFG cluster of excellence Origin and Structure of the Universe
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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-1(0) and P-3(0) 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.
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