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The Universal Expression for the Amplitude Square in Quantum Electrodynamics


Affiliations
1 Department of Radiophysics, Taras Shevchenko University, Kyiv, Ukraine
2 Department of Physics, University of Central Florida, Orlando, FL, United States
 

The universal expression for the amplitude square ‖̅ufMui2 for any matrix of interaction M is derived. It has obvious covariant form. It allows the avoidance of calculation of products of the Dirac's matrices traces and allows easy calculation of cross-sections of any different processes with polarized and unpolarized particles.

Keywords

Quantum Electrodynamics, Amplitude Square, Polarized Particles.
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  • The Universal Expression for the Amplitude Square in Quantum Electrodynamics

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Authors

Konstantin Karplyuk
Department of Radiophysics, Taras Shevchenko University, Kyiv, Ukraine
Oleksandr Zhmudskyy
Department of Physics, University of Central Florida, Orlando, FL, United States

Abstract


The universal expression for the amplitude square ‖̅ufMui2 for any matrix of interaction M is derived. It has obvious covariant form. It allows the avoidance of calculation of products of the Dirac's matrices traces and allows easy calculation of cross-sections of any different processes with polarized and unpolarized particles.

Keywords


Quantum Electrodynamics, Amplitude Square, Polarized Particles.