Peculiarities of Pair Creation by a Peak Electric Field
| Autor: | R. Ferreira, S. P. Gavrilov, T. C. Adorno, D. M. Gitman |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Field (physics) 010308 nuclear & particles physics Дирака уравнение General Physics and Astronomy пиковое электрическое поле 01 natural sciences Instability Momentum symbols.namesake внешние поля Amplitude Dirac equation Quantum mechanics Electric field Quantum electrodynamics квантовая электродинамика 0103 physical sciences symbols Electric potential 010306 general physics Differential (mathematics) |
| Zdroj: | Russian physics journal. 2017. Vol. 60, № 3. P. 417-426 |
| ISSN: | 1573-9228 1064-8887 |
| DOI: | 10.1007/s11182-017-1090-y |
| Popis: | Exact, numerical, and asymptotic calculations concerning the vacuum instability by the so-called peak electric field are explored in detail. Peculiarities discussed in this article are complementary to those published recently by us in Eur. Phys. J. C, 76, p. 447 (2016), in which the effect was studied in the framework of QED with t -electric potential steps. To discuss features beyond the asymptotic regime, we present numerical details of exact and asymptotic expressions inherent to the peak field and discuss differential and total quantities. The results show wider distributions, with respect to the longitudinal momentum, as the phases k1 and k2 of the electric field decrease and larger distributions as the amplitude E increases. Moreover, the total density of pairs created decreases as k1 and k2 increase, its dependence being proportional to $$ {k}_1^{-1} $$ and $$ {k}_2^{-1} $$ . The latter result is more accurate as k1 and k2 decrease and confirms, in particular, our asymptotic estimates obtained previously. |
| Databáze: | OpenAIRE |
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