8-10 June 2016
Asia/Bangkok timezone

The Calculation of Transition Amplitudes of Some Interactions among Electrons, Positrons, and Photons

Jun 8, 2016, 11:45 AM
Room Anek

Room Anek

Oral presentaion High Energy and Particle Physics Session III


Mr Kitinan Pongsangangan (Department of Physics, Khon Kaen University, Thailand)


This project aims to study the possibility of some interactions among three types of particles, i.e., electrons, positrons, and photons, from quantum perspective. The transition amplitudes of which the squares are occurring probability for some interactions are investigated. Despite having a simple method of Feynman diagram and Feynman rule, in this work, the transition amplitudes are calculated from foundational assumptions of quantum field theory (QFT) by mean of the quantum electrodynamics interaction operator, S operator, expansion. It is found that the second order S operator predicts the existence of interactions with non-vanishing transition amplitude, for example, electron-position scattering, electron-position annihilation and pair-production, electron-photon scattering, and positron-photon scattering.

Primary author

Mr Kitinan Pongsangangan (Department of Physics, Khon Kaen University, Thailand)

Presentation materials

There are no materials yet.