2born (2born) wrote,
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2born

Точная теория тормозного излучения электрона на электроне (нерелятивистских)

Exact Theory of Non-relativistic Electron-Electron Bremsstrahlung: https://arxiv.org/abs/2007.06592
Josef Pradler, Lukas Semmelrock
The quantum mechanical treatment of quadrupole radiation due to bremsstrahlung exact to all orders in the Coulomb interaction of two colliding unpolarized non-relativistic charged spin-1/2 particles is presented. We calculate the elements of the quadrupole tensor, and present analytical solutions for the double differential photon emission cross section of identical and non-identical particles. Contact is made to Born-level and quasi-classical results in the respective kinematic limits and effective energy loss rates are obtained. A generally valid formula for soft-photon emission is established and an approximate formula across the entire kinematic regime is constructed. The results apply to bremsstrahlung emission in the scattering of pairs of electrons and are hence relevant in the study of astrophysical phenomena. A definition of a Gaunt factor is proposed which should facilitate broad applicability of the results.
Comments: 19 pages, 6 figures
Tags: КЭД, наука, разгребая arXiv'ы
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