شنبه، بهمن ۲۷، ۱۳۸۶

About isolation and conservation

The mathematical methods used in this period presented a bewildering variety of concepts and formalisms. One approach developed by Schwinger was based on operator methods and the action principle, and was presented by him at a conference at Pocono Manor in 1948, the successor to the Shelter Island Conference. Another Lorentz-invariant operator formalism had been developed earlier by Sin-Itiro Tomonaga and his co-workers in Japan, but their work was not at first known in the West. Tomonaga had grappled with infinities in Yukawa's meson theory in the 1930s. In 1947 he and his group were still out of the loop of scientific communication; they learned about Lamb's experiment from an article in Newsweek.
(P.36)

When the revolution came in the late 1940s, it was made by physicists who though mostly young were playing a conservative role, turning away from the search by their predecessors for a radical solution.
(P.38)

~Steven Weinberg, The Quantum Theory of Fields, Vol. 1

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