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arXiv · hep-ph/9907308

Coherent States in High-Energy Physics

C. S. Lam
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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 {\it non-abelian}, the amplitude is given by a sum of factorized {\it 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-$N_c$ QCD, and to obtain a total cross section satisfying the Froissart bound.

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C. S. Lam. 1999-07-12. Coherent States in High-Energy Physics. https://doi.org/10.1063/1.1301296

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