Coherent States in High-Energy Physics

Details Coherent States in High-Energy Physics Coherent States in High-Energy Physics

1999-07-12

arxiv.org/abs/hep-ph/9907308v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at the MRST Meeting in Ottawa, Canada. May 10-12, 1999. 8 pages

Scientific paper

10.1063/1.1301296

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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