Numerical study of multiparticle production in $\lambda\phi^4$ theory
| Autor: | Demidov, S., Farkhtdinov, B., Levkov, D. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Phys. Part. Nuclei Lett. 20, 229-232 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1134/S1547477123030202 |
| Popis: | We study multiparticle production in the unbroken $(3+1)$-dimensional $\lambda\phi^4$ theory using the semiclassical method of singular solutions. We show that the probabilities of these processes are exponentially suppressed in terms of a small coupling constant $\lambda \ll 1$ if the multiplicity of the final state is large: $n \gg 1$. At $ n \ll \lambda^{-1}$ the probabilities agree with well-known perturbative results. At $ n \gg \lambda^{-1}$ they are dominated by loop effects and decrease exponentially with $n$, as we show for the first time. Comment: 7 pages, 2 figures. A contribution to International Conference on Quantum Field Theory, High-Energy Physics, and Cosmology, 18-21 July 2022, Dubna, Russian Federation |
| Databáze: | arXiv |
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