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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 functions in quantum field theories (QFTs).
Download as PDF; Printable version; ... screened Poisson equation; Schwinger–Dyson equation; ... (physical chemistry) List of equations in classical mechanics;
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 ...
Tomonaga, Schwinger, and Feynman were jointly awarded the 1965 Nobel Prize in Physics for their work in this area. [23] Their contributions, and Dyson's, were about covariant and gauge-invariant formulations of quantum electrodynamics that allow computations of observables at any order of perturbation theory.
These directly corresponded (through the Schwinger–Dyson equation) to the measurable physical processes (cross sections, probability amplitudes, decay widths and lifetimes of excited states) one needs to be able to calculate. This revolutionized how quantum field theory calculations are carried out in practice.
By utilizing the interaction picture, one can use time-dependent perturbation theory to find the effect of H 1,I, [15]: 355ff e.g., in the derivation of Fermi's golden rule, [15]: 359–363 or the Dyson series [15]: 355–357 in quantum field theory: in 1947, Shin'ichirÅ Tomonaga and Julian Schwinger appreciated that covariant perturbation ...
Schwinger–Dyson equation: Quantum field theory: Julian Schwinger and Freeman Dyson: Screened Poisson equation: Plasma physics: Siméon Denis Poisson: Seiberg–Witten equation: PDE: Nathan Seiberg and Edward Witten: Sellmeier equation: Optics: W. Sellmeier: sine–Gordon equation: Solitons: Walter Gordon: Slutsky equation: Consumer theory ...
Download as PDF; Printable version; In other projects Wikimedia Commons; ... Bargmann–Wigner equations; Schwinger-Dyson equation; Renormalization group equation;