4 citations · 7 across the 5 of their papers we have counts for
8 papers · 1 filter
Soft photon approximation in a laser field: applications
Peter A. Krachkov, Simon V. Sorokin
We apply the soft photon approximation to QED processes in a strong plane-wave laser field. New compact expressions for the emission factors are presented, which simplify the gener…
Single-quantum annihilation of positrons at low energies
Peter. A. Krachkov, Simon. V. Sorokin
We discuss the single-quantum positron annihilation with a bound electron in the near threshold region. The angular distribution and the total cross section are considered. We obta…
Soft photon approximation in a laser field
P. A. Krachkov
In the present paper, we consider processes involving the emission of soft photons in the presence of a strong laser field. We demonstrate that the matrix element for a process…
Photoproduction of pair in a Coulomb field near the threshold
P. A. Krachkov, R. N. Lee, A. I. Milstein
We consider the electron-positron pair production by a photon in Coulomb field near threshold. We obtain the analytical results for the particle energy spectrum and angular distrib…
Gauge invariance and amplitudes of two-photon processes
P. A. Krachkov, A. I. Milstein, A. G. Shamov
A method to derive the convenient representations for many two-photon amplitudes is suggested. It is based on the use of the gauge in which the photon propagator has only space com…
High-energy bremsstrahlung on atoms in a laser field
P. A. Krachkov, A. Di Piazza, A. I. Milstein
The impact of a laser field on the process of photon radiation by an ultra-relativistic electron in an atomic field is investigated. The angular distribution and the spectrum of th…