Quasiclassical approach to high-energy QED processes in strong laser and atomic fields

Abstract

An approach, based on the use of the quasiclassical Green's function, is developed for investigating high-energy quantum electrodynamical processes in combined strong laser and atomic fields. Employing an operator technique, we derive the Green's function of the Dirac equation in an arbitrary plane wave and a localized potential. Then, we calculate the total cross section of high-energy electron-positron photoproduction in an atomic field of arbitrary charge number (Bethe-Heitler process) in the presence of a strong laser field. It is shown that the laser field substantially modifies the cross section at already available incoming photon energies and laser parameters. This makes it feasible to observe the analogous effect in a laser field of the Landau-Pomeranchuk-Migdal effect for the Bethe-Heitler process.

5 pages, 1 figure

References in corpus (5)

• Barrier control in tunneling e^+ e^- photoproduction
• Polarization operator approach to electron-positron pair production in combined laser and Coulomb fields
• Nonlinear Bethe-Heitler pair creation with attosecond laser pulses at the LHC
• Production of high energy particles in laser and Coulomb fields and e^+e^- antenna
• Delbrück scattering in combined Coulomb and laser fields

Cited by in corpus (7)

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• High-energy $e^{+}{e}^{-}$ photoproduction in the field of a heavy atom accompanied by bremsstrahlung
• Ultrarelativistic quasiclassical wave functions in strong laser and atomic fields
• Double bremsstrahlung from high-energy electron in the atomic field
• Bound-free electron-positron pair production in combined Coulomb and constant crossed electromagnetic fields: a Schwinger-like process with intrinsic assistance
• Resonant amplification of a relativistic electron bremsstrahlung on an atom in the undulator field