Delocalization of the axial charge in the chiral limit
Abstract
The nucleon's axial vector charge, gA, becomes delocalized in the chiral limit. When mπ = 0, and SU(2)L x SU(2)R is exact, 1/3 of the nucleon's axial charge is to be found at infinite distance from the nucleon. For finite mπ this result is approached smoothly as mπ -> 0. We illustrate this effect by considering the lepton-proton spin-spin interaction arising from Z0 exchange as a function of mπ. Delocalization may have implications for lattice calculations of gA and in nuclei.
0
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.