Role of switching-on and -off effects in the vacuum instability

Autor(es)

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

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Modern Physics A; v. 33, n. 11 APR 20 2018.
• Citações Web of Science: 3

Resumo

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)

• 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