Weak axial exchange currents for the Bethe–Salpeter equation

1999/11/06 by F. C. Khanna, E. Truhlı́k, E. Truhlik · 1 citation
Physics and Astronomy · #Particle physics theoretical and experimental studies #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions #nucl-th

paper · pdf · doi:10.1016/s0375-9474(00)00060-9

published as Nucl.Phys. A673 (2000) 455-478 · 26 pages with 1 figure, LaTeX, feynman, submitted to Nucl. Phys. A. A small grammatical change in Acknowledgments

arxiv created 1999/11/06 · openalex publication_date 2000/06/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We construct weak axial one-boson exchange currents for the Bethe-Salpeter equation, starting from chiral Lagrangians of the N-Δ(1236)-pi-rho-a₁-omega system. The currents fulfil the Ward-Takahashi identities and the matrix element of the full current between the two-body solutions of the Bethe-Salpeter equation satisfies the PCAC constraint exactly.

Citations

• Chiral Lagrangians and the Transition Amplitude for Radiative Muon Capture
• A Relativistic Equation for Bound-State Problems
• Conservation of Isotopic Spin and Isotopic Gauge Invariance

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• Weak axial nuclear heavy meson exchange currents and interactions of solar neutrinos with deuterons