Read about heisenberg exchange isospin | 1 Discussions | Page 1

  1. J

    Help with Heisenberg's "isospin" Hamiltonian

    I'm having some trouble grasping the meaning of the exchange term in the Hamiltonian Heisenberg gives in his classic 1932 paper (the one typically given as the first to describe nucleons via a spin-like degree of freedom; NOTE: I realize this isn't the same as what is today called isospin, but...