Chiral effective field theory and nuclear forces

Chiral effective field theory and nuclear forces

May 17, 2011 | R. Machleidt, D. R. Entem
The article reviews the emergence of nuclear forces from low-energy Quantum Chromodynamics (QCD) via Chiral Effective Field Theory (EFT). It provides an accessible overview for non-specialists while offering detailed information for researchers. The review covers the historical perspective, symmetries of low-energy QCD, chiral effective Lagrangians, nucleon contact Lagrangians, and the hierarchy of nuclear forces. It also delves into two-nucleon interactions, including pion-exchange contributions, perturbative $NN$ scattering, and contact terms. The article discusses the construction of quantitative chiral $NN$ potentials and the renormalization process. Additionally, it explores nuclear many-body forces, the extension of the theory through the introduction of $\Delta(1232)$-isobar degrees of freedom, and higher-order contributions to nuclear forces. The appendices provide mathematical details and Feynman rules, making the article a comprehensive resource for those interested in the field.The article reviews the emergence of nuclear forces from low-energy Quantum Chromodynamics (QCD) via Chiral Effective Field Theory (EFT). It provides an accessible overview for non-specialists while offering detailed information for researchers. The review covers the historical perspective, symmetries of low-energy QCD, chiral effective Lagrangians, nucleon contact Lagrangians, and the hierarchy of nuclear forces. It also delves into two-nucleon interactions, including pion-exchange contributions, perturbative $NN$ scattering, and contact terms. The article discusses the construction of quantitative chiral $NN$ potentials and the renormalization process. Additionally, it explores nuclear many-body forces, the extension of the theory through the introduction of $\Delta(1232)$-isobar degrees of freedom, and higher-order contributions to nuclear forces. The appendices provide mathematical details and Feynman rules, making the article a comprehensive resource for those interested in the field.
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[slides and audio] Chiral effective field theory and nuclear forces