1998/10/16 by Horst Mueller, Horst Müller · 1 citation
Physics and Astronomy · #Baryon #Effective field theory #High-Energy Particle Collisions Research #Mathematical physics #Meson #Nuclear matter #Nucleon #Octet #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Strangeness #Yukawa potential #nucl-th
paper · pdf · doi:10.1103/physrevc.59.1405
published as Phys.Rev. C59 (1999) 1405-1421 · 38 pages including 9 figures
arxiv created 1998/10/16 · openalex publication_date 1999/03/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We extend the effective field theory approach which successfully describes ordinary nuclei and nuclear matter to incorporate strangeness in nuclear structure. The central object is a chiral effective Lagrangian involving the baryon octet, the Goldstone boson octet, the vector meson octet, and a light scalar singlet. According to the rules of effective field theory, we include all interaction terms (up to a given order of truncation) that are consistent with the underlying symmetries of QCD. We develop a mean-field approximation and study nuclear matter as a simple model for multistrange systems. A D-type Yukawa coupling between baryons and vector mesons leads to \ensuremathΛ\ensuremath-\ensuremathΣ0 flavor mixing in the nuclear medium. We study flavor oscillations in the nuclear matter ground state which are closely related to the phenomenon of neutrino oscillations.