Research Reconstruction
Schwinger's corpus is unusually coherent across nuclear physics, wartime electrodynamics, renormalized QED, the quantum action principle, Green functions, gauge theory, angular momentum, source theory, and later foundational lectures. The recurring algorithm is to rebuild physics from physically controlled primitives: actions, variations, sources, Green functions, symmetries, measurable amplitudes, and elegant calculations.
The 300 cases combine selected papers, book chapters, lecture-note families, archive-style manuscript sections, and late public syntheses. Strategy tags are intentionally overlapping: one Schwinger case may simultaneously use the action principle, a Green function, physical renormalization, and a source-theory reinterpretation.
Interactive Strategy Tree
Overlapping Strategy Prevalence
Percentages mean case prevalence: a method used in 180 of 300 cases is shown as 60%. Because each case may use several methods, totals are not expected to sum to 100%.