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Resonant generation of electromagnetic modes in nonlinear electrodynamics: quantum perturbative approachстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 мая 2024 г.
- Авторы: Kopchinskii Ilia, Satunin Petr
- Журнал: European Physical Journal D
- Том: 78
- Год издания: 2024
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- Номер статьи: 54
- DOI: 10.1140/epjd/s10053-024-00850-6
- Аннотация: The paper studies resonant generation of higher-order harmonics in a closed cavity in Euler-Heisenberg electrodynamics from the point of view of pure quantum field theory. We consider quantum states of the electromagnetic field in a rectangular cavity with conducting boundary conditions and calculate the cross section for the merging of three quanta of cavity modes into a single one ($3 \to 1$ process) as well as the scattering of two cavity mode quanta ($2 \to 2$ process). We show that the amplitude of the merging process vanishes for a cavity with an arbitrary aspect ratio and provide an explanation based on plane wave decomposition for cavity modes. Contrary, the scattering amplitude is nonzero for specific cavity aspect ratio. This $2 \to 2$ scattering is a crucial elementary process for the generation of a quantum of a high-order harmonics with frequency $2\omega_1-\omega_2$ in an interaction of two coherent states of cavity modes with frequencies $\omega_1$ and $\omega_2$. For this process, we calculate the mean number of quanta in the final state in a model with dissipation, which supports the previous result of resonant higher-order harmonics generation in an effective field theory approach (Kopchinskii and Satunin in Phys Rev A 105:013508, 2022).
- Добавил в систему: Копчинский Илья Дмитриевич