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- Title
Vacuum polarization and particle creation in the presence of a potential step.
- Authors
Gavrilov, S. P.; Gitman, D. M.
- Abstract
We consider QED with strong external backgrounds that are concentrated in restricted space areas. The latter backgrounds represent a kind of spatial x-electric potential steps for charged particles. They can create particles from the vacuum, the Klein paradox being closely related to this process. We describe a canonical quantization of the Dirac field with x-electric potential step in terms of adequate in- and out-creation and annihilation operators that allow one to have consistent particle interpretation of the physical system under consideration and develop a nonperturbative (in the external field) technics to calculate scattering, reflection, and electron-positron pair creation. We resume the physical impact of this development.
- Subjects
VACUUM polarization; ELECTRIC potential; CANONICAL quantization; ANNIHILATION operators; KLEIN paradox; PARTICLE interactions
- Publication
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics, 2016, Vol 31, Issue 2/3, p1
- ISSN
0217-751X
- Publication type
Article
- DOI
10.1142/S0217751X16410311