| Full text | |
| Author(s): |
Total Authors: 4
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| Affiliation: | [1] Tomsk State Univ, Dept Phys, Lenin Prospekt 36, Tomsk 634050 - Russia
[2] Hebei Univ, Coll Phys Sci & Technol, Wusidong Rd 180, Baoding 071002 - Peoples R China
[3] Univ Sao Paulo, Inst Fis, Caixa Postal 66318, BR-05508090 Sao Paulo, SP - Brazil
[4] Herzen State Pedag Univ Russia, Dept Gen & Expt Phys, Moyka Embankment 48, St Petersburg 191186 - Russia
[5] PN Lebedev Phys Inst, 53 Leninskiy Prospekt, Moscow 119991 - Russia
Total Affiliations: 5
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| Document type: | Journal article |
| Source: | International Journal of Modern Physics A; v. 33, n. 11 APR 20 2018. |
| Web of Science Citations: | 3 |
| Abstract | |
We find exact differential mean numbers of fermions and bosons created from the vacuum due to a composite electric field of special configuration. This configuration imitates a finite switching-on and-off regime and consists of fields that switch on exponentially from the infinitely remote past, remains constant during a certain interval T and switch off exponentially to the infinitely remote future. We show that calculations in the slowly varying field approximation are completely predictable in the framework of a locally constant field approximation. Beyond the slowly varying field approximation, we study effects of fast switching on and off in a number of cases when the size of the dimensionless parameter root eET is either close or exceeds the threshold value that determines the transition from a regime sensitive to on-off parameters to the slowly varying regime for which these effects are secondary. (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 |