Coherent States in High-Energy Physics
Abstract
The amplitude for emitting n bosons factorizes into the product of n single-boson emission amplitudes, if the source is energetic and abelian. If it is energetic but non-abelian, the amplitude is given by a sum of factorized quasi-particle amplitudes. A quasi-particle is made up of an arbitrary number of bosons, but couples to the source like a single one. Factorization is related to coherence, and it allows computation of subleading contributions not obtainable by usual means. Its importance is illustrated in two applications: to solve the baryon problem in large-Nc QCD, and to obtain a total cross section satisfying the Froissart bound.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.