Compton scattering S matrix and cross section in strong magnetic field
Abstract
Compton scattering of polarized radiation in a strong magnetic field is considered. The recipe for calculation of the scattering matrix elements, the differential and total cross sections based on quantum electrodynamic second-order perturbation theory is presented for the case of arbitrary initial and final Landau level, electron momentum along the field and photon momentum. Photon polarization and electron spin state are taken into account. The correct dependence of natural Landau level width on the electron spin state is taken into account in a general case of arbitrary initial photon momentum for the first time. A number of steps in the calculations were simplified analytically making the presented recipe easy to use. The redistribution functions over the photon energy, momentum and polarization states are presented and discussed. The paper generalizes already known results and offers a basis for the accurate calculation of radiation transfer in a strong B field, for example, in strongly magnetized neutron stars.
- Publication:
-
Physical Review D
- Pub Date:
- May 2016
- DOI:
- 10.1103/PhysRevD.93.105003
- arXiv:
- arXiv:1512.06681
- Bibcode:
- 2016PhRvD..93j5003M
- Keywords:
-
- Astrophysics - High Energy Astrophysical Phenomena;
- High Energy Physics - Theory
- E-Print:
- 26 pages, 12 figures, accepted for publication in Phys. Rev. D