Charge-dependent nucleon-nucleon potentials in covariant chiral effective field theory

2025/04/22 by Yang Xiao, Xiao, Yang, Jun-Xu Lu +6
Physics and Astronomy · #Pulsars and Gravitational Waves Research #Nuclear physics research studies #Quantum, superfluid, helium dynamics

paper · pdf · doi:10.1103/85cd-6gzn

Abstract

The charge-dependent nucleon-nucleon (NN) interaction plays a crucial role in understanding the nuclear structure and reaction problems. In this work, we explore the charge-dependent NN interaction in covariant chiral effective field theory. By incorporating the isospin-breaking contributions, we derive the charge-dependent covariant chiral NN potential up to next-to-next-to leading order (NNLO). The calculated np and pp phase shifts are in satisfactory agreement with the PWA93 partial wave analysis. Our results contribute to a deeper understanding of isospin-breaking effects in nuclear forces and provide a solid foundation for future studies of nuclear structure and reactions within the covariant framework.

Related

• Charge-dependent nucleon-nucleon interaction at N³LO in nuclear lattice effective field theory
• Chiral NN interaction in nuclear matter
• Chiral Symmetry and the Nucleon-Nucleon Interaction
• The comparison of the state-of-the-art nucleon-nucleon potentials from phase shift to nuclear matter
• Toward Chiral Theory of NN interactions in nuclear matter