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The Schwinger–Dyson equations (SDEs) or Dyson–Schwinger equations, named after Julian Schwinger and Freeman Dyson, are general relations between correlation ...
The Maris-Tandy model can be applied to solve for the structure of pions, kaons, and a selection of vector mesons from the homogeneous Bethe-Salpeter equation [1]. [2] It can also be used to solve for the quark-photon vertex from the inhomogeneous Bethe-Salpeter equation, [3] for the elastic form factors of pseudoscalar mesons, [4] [5] and for the radiative transitions of mesons. [6]
Schwinger–Dyson equation; ... Class equation; ... Defining equation (physical chemistry) List of equations in classical mechanics;
The starting point for the derivation of the Bethe–Salpeter equation is the two-particle (or four point) Dyson equation = + in momentum space, where "G" is the two-particle Green function | | , "S" are the free propagators and "K" is an interaction kernel, which contains all possible interactions between the two particles.
Julian Schwinger, winner of the 1965 Nobel Prize in Physics.Original caption: "His laboratory is his ballpoint pen." Julian Seymour Schwinger (/ ˈ ʃ w ɪ ŋ ər /; February 12, 1918 – July 16, 1994) was a Nobel Prize-winning American theoretical physicist.
Two solutions of these equations for the same current configuration differ by a solution of the vacuum wave equation = In this form it is clear that the components of the potential separately satisfy the Klein–Gordon equation , and hence that the Lorenz gauge condition allows transversely, longitudinally, and "time-like" polarized waves in ...
This is equal to an energy of only 7.00 x 10^-25 J., or 4.37 x 10^-6 eV. Welton's heuristic derivation of the Lamb shift is similar to, but distinct from, the calculation of the Darwin term using Zitterbewegung , a contribution to the fine structure that is of lower order in α {\displaystyle \alpha } than the Lamb shift.
[citation needed] Most recently, [specify] Lee and Richard M. Friedberg developed a new method to solve the Schrödinger equation, leading to convergent iterative solutions for the long-standing quantum degenerate double-wall potential and other instanton problems. They also did work on the neutrino mapping matrix.