In-medium modification of the isovector pion-nucleon amplitude

Abstract

We study the in-medium modification of the isovector pi N amplitude using a non-linear representation of the sigma model but keeping the scalar degree of freedom. We check that our result does not depend on the representation. We discuss the connection with other approaches based on chiral perturbation theory.

arXiv comment7 pages

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Cited by in corpus (9)

• η- and η'-mesic nuclei and U_A(1) anomaly at finite density
• Non-perturbative methods for a chiral effective field theory of finite density nuclear systems
• Formation of η'(958)-mesic nuclei and axial U_A(1) anomaly at finite density
• The pion-nucleon $\sigma$ term from pionic atoms
• Chiral symmetry restoration at high matter density observed in pionic atoms
• Chiral Effective Field Theory for Nuclear Matter with long- and short-range Multi-Nucleon Interactions
• QCD susceptibilities and nuclear matter saturation in a chiral theory: inclusion of pion loops
• The s-wave pion-nucleus optical potential
• Scalar field in nuclear matter: the roles of spontaneous chiral symmetry breaking and nucleon structure