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单词 Ladder approximation
释义

Ladder approximation

英语百科

Bethe–Salpeter equation

A graphical representation of the Bethe–Salpeter equation
A graphical representation of the Bethe–Salpeter equation in Ladder-approximation

The Bethe–Salpeter equation, named after Hans Bethe and Edwin Salpeter, describes the bound states of a two-body (particles) quantum field theoretical system in a relativistically covariant formalism. The equation was actually first published in 1950 at the end of a paper by Yoichiro Nambu, but without derivation.

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