Locally Constant and Crossed-Field Approximation for Description of the Photon Emission in a Strong Oscillating Electric Field

A. A. Mironov; E. G. Gel’fer; A. M. Fedotov

doi:10.3103/S1068335623170098

Locally Constant and Crossed-Field Approximation for Description of the Photon Emission in a Strong Oscillating Electric Field

A. A. Mironov, E. G. Gel’fer, A. M. Fedotov

Research output: Contribution to journal › Article › peer-review

Abstract

Abstract—: The process of photon emission by a charged scalar particle (spinless analog of an electron) in a strong spatially homogeneous time-dependent electric field is considered. In the case where the emitting particle is ultrarelativistic and the field strength component oriented perpendicular to the particle motion direction is sufficiently large, the emission probability amplitude can be generally calculated within the locally constant field approximation (LCFA). By an example of a linearly polarized oscillating electric field, the applicability limits of this approximation are analyzed, and its predictions are compared with the results of numerical calculation of the process amplitude using the semiclassical solution of the Klein–Gordon equation in a time-dependent field.

Original language	English
Pages (from-to)	S587-S593
Journal	Bulletin of the Lebedev Physics Institute
Volume	50
DOIs	https://doi.org/10.3103/S1068335623170098
Publication status	Published - 1 Oct 2023
Externally published	Yes

Keywords

emission in the field of ultrahigh-intensity laser
locally constant field approximation (LCFA)
nonlinear Compton effect
strong-field quantum electrodynamics

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10.3103/S1068335623170098

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title = "Locally Constant and Crossed-Field Approximation for Description of the Photon Emission in a Strong Oscillating Electric Field",

abstract = "Abstract—: The process of photon emission by a charged scalar particle (spinless analog of an electron) in a strong spatially homogeneous time-dependent electric field is considered. In the case where the emitting particle is ultrarelativistic and the field strength component oriented perpendicular to the particle motion direction is sufficiently large, the emission probability amplitude can be generally calculated within the locally constant field approximation (LCFA). By an example of a linearly polarized oscillating electric field, the applicability limits of this approximation are analyzed, and its predictions are compared with the results of numerical calculation of the process amplitude using the semiclassical solution of the Klein–Gordon equation in a time-dependent field.",

keywords = "emission in the field of ultrahigh-intensity laser, locally constant field approximation (LCFA), nonlinear Compton effect, strong-field quantum electrodynamics",

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T1 - Locally Constant and Crossed-Field Approximation for Description of the Photon Emission in a Strong Oscillating Electric Field

AU - Mironov, A. A.

AU - Gel’fer, E. G.

AU - Fedotov, A. M.

PY - 2023/10/1

Y1 - 2023/10/1

N2 - Abstract—: The process of photon emission by a charged scalar particle (spinless analog of an electron) in a strong spatially homogeneous time-dependent electric field is considered. In the case where the emitting particle is ultrarelativistic and the field strength component oriented perpendicular to the particle motion direction is sufficiently large, the emission probability amplitude can be generally calculated within the locally constant field approximation (LCFA). By an example of a linearly polarized oscillating electric field, the applicability limits of this approximation are analyzed, and its predictions are compared with the results of numerical calculation of the process amplitude using the semiclassical solution of the Klein–Gordon equation in a time-dependent field.

AB - Abstract—: The process of photon emission by a charged scalar particle (spinless analog of an electron) in a strong spatially homogeneous time-dependent electric field is considered. In the case where the emitting particle is ultrarelativistic and the field strength component oriented perpendicular to the particle motion direction is sufficiently large, the emission probability amplitude can be generally calculated within the locally constant field approximation (LCFA). By an example of a linearly polarized oscillating electric field, the applicability limits of this approximation are analyzed, and its predictions are compared with the results of numerical calculation of the process amplitude using the semiclassical solution of the Klein–Gordon equation in a time-dependent field.

KW - emission in the field of ultrahigh-intensity laser

KW - locally constant field approximation (LCFA)

KW - nonlinear Compton effect

KW - strong-field quantum electrodynamics

U2 - 10.3103/S1068335623170098

DO - 10.3103/S1068335623170098

M3 - Article

AN - SCOPUS:85173958414

SN - 1068-3356

VL - 50

SP - S587-S593

JO - Bulletin of the Lebedev Physics Institute

JF - Bulletin of the Lebedev Physics Institute

ER -

Locally Constant and Crossed-Field Approximation for Description of the Photon Emission in a Strong Oscillating Electric Field

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