New Generation of High Precision Nuclear Forces-Relativistic Chiral Nuclear Force-Status and Prospects
Understanding the nucleon-nucleon interaction in free space and in medium has always been one of the most im-portant topics in nuclear physics.It is also one of the most important objectives of large scientific facilities such as HIAF and FRIB.Understanding nuclear structure,reactions,and the properties of dense stars from ab initio calculations based on nucle-on degrees of freedom and microscopic nuclear forces has always been a primary goal pursued by nuclear physicists.First pro-posed by Nobel laureate Weinberg in 1990s and developed by joint efforts of scientists around the world,the Weinberg chiral nuclear force has now been the de facto standard input for ab initio studies.So far,however,relativistic ab initio calculations have only just begun unlike disciplines such as atomic and molecular physics and chemistry.One of the most important issues restricting its development is the lack of modern relativistic nucleon-nucleon interactions.In order to promote the develop-ment of relativistic ab initio nuclear physics researches,improve our understanding of the strong interaction and compensate the deficiencies of Weinberg chiral nuclear force,our group in Beihang university together with the cooperators developed the first high precision relativistic chiral nuclear force.In this work,we briefly review the development venation and current status of the Weinberg chiral nuclear force,as well as its deficiencies.We further present a short introduction to the framework of re-lativistic chiral nuclear force,show its description of the scattering phase shifts as well as observables such as differential cross sections and demonstrate its advantages over Weinberg chiral nuclear force.At last we prospected its future developments and applications.
chiral effective field theorychiral nuclear forcerelativistic effectsab initio calculations
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