Locally-constant field approximation in studies of electron-positron pair production in strong external fields

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Locally-constant field approximation in studies of electron-positron pair production in strong external fields. / Aleksandrov, I. A.; Plunien, G.; Shabaev, V. M.

в: Physical Review D, Том 99, № 1, 016020, 01.01.2019.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{bd4ee2cb0c184d93854dd8d0041bda8a,

title = "Locally-constant field approximation in studies of electron-positron pair production in strong external fields",

abstract = "In the present investigation we revisit the widely-used locally-constant field approximation (LCFA) in the context of the pair-production phenomenon in strong electromagnetic backgrounds. By means of nonperturbative numerical calculations, we assess the validity of the LCFA considering several spatially homogeneous field configurations and a number of space-time-dependent scenarios. By studying the momentum spectra of particles produced, we identify the criteria for the applicability of the LCFA. It is demonstrated that the Keldysh parameter itself does not allow one to judge if the LCFA should perform accurately. In fact, the external field parameters must obey less trivial relations whose form depends on the field configuration. We reveal several generic properties of these relations which can also be applied to a broader class of other pair-production scenarios.",

author = "Aleksandrov, {I. A.} and G. Plunien and Shabaev, {V. M.}",

year = "2019",

month = jan,

day = "1",

doi = "10.1103/PhysRevD.99.016020",

language = "English",

volume = "99",

journal = "Physical review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "1",

}

RIS

TY - JOUR

T1 - Locally-constant field approximation in studies of electron-positron pair production in strong external fields

AU - Aleksandrov, I. A.

AU - Plunien, G.

AU - Shabaev, V. M.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - In the present investigation we revisit the widely-used locally-constant field approximation (LCFA) in the context of the pair-production phenomenon in strong electromagnetic backgrounds. By means of nonperturbative numerical calculations, we assess the validity of the LCFA considering several spatially homogeneous field configurations and a number of space-time-dependent scenarios. By studying the momentum spectra of particles produced, we identify the criteria for the applicability of the LCFA. It is demonstrated that the Keldysh parameter itself does not allow one to judge if the LCFA should perform accurately. In fact, the external field parameters must obey less trivial relations whose form depends on the field configuration. We reveal several generic properties of these relations which can also be applied to a broader class of other pair-production scenarios.

AB - In the present investigation we revisit the widely-used locally-constant field approximation (LCFA) in the context of the pair-production phenomenon in strong electromagnetic backgrounds. By means of nonperturbative numerical calculations, we assess the validity of the LCFA considering several spatially homogeneous field configurations and a number of space-time-dependent scenarios. By studying the momentum spectra of particles produced, we identify the criteria for the applicability of the LCFA. It is demonstrated that the Keldysh parameter itself does not allow one to judge if the LCFA should perform accurately. In fact, the external field parameters must obey less trivial relations whose form depends on the field configuration. We reveal several generic properties of these relations which can also be applied to a broader class of other pair-production scenarios.

UR - http://www.scopus.com/inward/record.url?scp=85061103039&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.99.016020

DO - 10.1103/PhysRevD.99.016020

M3 - Article

AN - SCOPUS:85061103039

VL - 99

JO - Physical review D

JF - Physical review D

SN - 2470-0010

IS - 1

M1 - 016020

ER -

ID: 39889956