| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] Tomsk State Univ, Dept Phys, Tomsk 634050 - Russia
[2] Russian Acad Sci, Inst High Current Elect, Siberian Branch, Tomsk 634055 - Russia
[3] Univ Sao Paulo, Inst Phys, BR-05508090 Sao Paulo, SP - Brazil
[4] Russian Acad Sci, Lebedev Phys Inst, Moscow 119991 - Russia
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS; v. 132, n. 2, p. 247-256, FEB 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
We present a semiclassical approximation for treating the radiation from classical currents. In particular, we present exact quantum states of the quantized electromagnetic field interacting with classical currents. These states are used to calculate a probability of many-photon radiation from the vacuum initial state of the electromagnetic field. In this manner, in the present article, we study characteristics of electromagnetic radiation of a planar undulator. We find the total radiated energy and its spectral-angular distribution. We compare our results with ones obtained in the framework of classical electrodynamics, discussing differences introduced by accurate accounting for the quantum nature of electromagnetic radiation and present results of some numerical calculations that confirm, in particular, the latter discussion. In Appendix we present the calculation of the radiated energy using an alternative parametrization of the trajectory of electrons moving in a planar undulator. (AU) | |
| FAPESP's process: | 16/03319-6 - Non perturbative methods in quantum theory and QFT and their application to actual physical problems |
| Grantee: | Dmitri Maximovitch Guitman |
| Support Opportunities: | Research Projects - Thematic Grants |