Journal
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
Volume 822, Issue -, Pages 1-52Publisher
ELSEVIER
DOI: 10.1016/j.physrep.2019.06.004
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Funding
- UK Science and Technology Facilities Council [ST/G000905/1]
- STFC [1770865, ST/G000905/1, ST/P001246/1] Funding Source: UKRI
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These notes provide a comprehensive review of the semiclassical approach for calculating multiparticle production rates for initial states with few particles at very high energies. In this work we concentrate on a scalar field theory with a mass gap. Specifically, we look at a weakly-coupled theory in the high-energy limit, where the number of particles in the final state scales with energy, n similar to E -> infinity, and the coupling lambda -> 0 with n lambda held fixed. In this regime, the semiclassical approach allows us to calculate multiparticle rates non-perturbatively. (C) 2019 Elsevier B.V. All rights reserved.
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