Violation of vacuum stability by inverse square electric fields

Autor(es)

Adorno, T. C. ^{[1, 2]} ; Gavrilov, S. P. ^{[3, 1]} ; Gitman, D. M. ^{[4, 1, 5]}

Afiliação do(s) autor(es)

^[1] Tomsk State Univ, Dept Phys, Lenin Prospekt 36, Tomsk 634050 - Russia

^[2] Hebei Univ, Dept Phys, Coll Phys Sci & Technol, Wusidong Rd 180, Baoding 071002 - Peoples R China

^[3] Herzen State Pedag Univ Russia, Dept Gen & Expt Phys, Moyka Embankment 48, St Petersburg 191186 - Russia

^[4] Univ Sao Paulo, Inst Fis, Caixa Postal 66318, BR-05508090 Sao Paulo, SP - Brazil

^[5] PN Lebedev Phys Inst, 53 Leninskiy Prospekt, Moscow 119991 - Russia

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN PHYSICAL JOURNAL C; v. 78, n. 12 DEC 18 2018.
• Citações Web of Science: 0

Resumo

In the framework of QED with a strong background, we study particle creation (the Schwinger effect) by a time-dependent inverse square electric field. To this end corresponding exact in- and out-solutions of the Dirac and Klein-Gordon equations are found. We calculate the vacuum-to-vacuum probability and differential and total mean numbers of pairs created from the vacuum. For electric fields varying slowly in time, we present detailed calculations of the Schwinger effect and discuss possible asymptotic regimes. The obtained results are consistent with universal estimates of the particle creation effect by electric fields in the locally constant field approximation. Differential and total quantities corresponding to asymmetrical configurations are also discussed in detail. Finally, the inverse square electric field is used to imitate switching on and off processes. Then the case under consideration is compared with the one where an exponential electric field is used to imitate switching on and off processes. (AU)

• Processo FAPESP: 16/03319-6 - Métodos não perturbativos em teoria quântica e em TQC e aplicações deles aos problemas de física atuais
• Beneficiário: Dmitri Maximovitch Guitman
• Modalidade de apoio: Auxílio à Pesquisa - Temático