Isospin-breaking two-nucleon force with explicit Δ excitations

2008/01/08 by E. Epelbaum, H. Krebs, Ulf-G. Meißner · 27 citations
Chemistry · Mathematics · Physics and Astronomy · #Advanced NMR Techniques and Applications #Charge (physics) #Chiral symmetry #Chiral symmetry breaking #Degrees of freedom (physics and chemistry) #Isospin #Mathematics #Nuclear physics #Nuclear physics research studies #Nucleon #Particle physics #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #Quark #Symmetry (geometry) #Symmetry breaking #nucl-th

paper · pdf · doi:10.1103/physrevc.77.034006

published in Physical Review C 77(3) (American Institute of Physics) · 10 pages, 4 figures

arxiv created 2008/01/08 · openalex publication_date 2008/03/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We study the leading isospin-breaking contributions to the two-nucleon two-pion exchange potential due to explicit \ensuremathΔ degrees of freedom in chiral effective field theory. In particular, we find important contributions due to the delta mass splittings to the charge symmetry breaking potential that act opposite to the effects induced by the nucleon mass splitting.

Citations

• Charge-symmetry-breaking three-nucleon forces
• Few-Nucleon Forces and Systems in Chiral Effective Field Theory
• Pion-photon exchange nucleon-nucleon potentials
• Nuclear forces with Δ excitations up to next-to-next-to-leading order, part I: Peripheral nucleon-nucleon waves
• Electromagnetic corrections to the dominant two-pion exchange nucleon-nucleon potential
• Isospin dependence of the three-nucleon force
• Charge-dependent nucleon–nucleon potential from chiral effective field theory
• Nucleon-mass difference in chiral perturbation theory and nuclear forces
• Chiral Dynamics in Nucleons and Nuclei
• Quark masses