Quantum electrodynamics of one and twophoton radiation and molecular interaction. Part 1: Novel twophoton radiative interaction operators from relativistic theory for Rayleigh scattering and for spindependent Faraday rotation. Part 2: Quantum field interaction and cooperative radiative transition by composite systems
Abstract
The quantum field theoretic treatment of Akhiezer and Berestetskii is generalized to a Dirac electron in a time dependent electromagnetic field. From the Hamiltonian a unique set of Hermitian, time dependent, interaction operators applicable to twophoton, as well as one photon, processes are obtained. The radiative process involving two interacting systems is studied using the third order S matrix theory. A rigorous evaluation of the two resulting third order Feynman diagrams from quantum electrodynamics in the nonrelativistic limit is performed. After the third order S matrix is reduced to the U matrix, this evaluation produces new field field interaction transition operators which are two electron operators and are different from those obtained earlier by Chiu by a conventional method.
 Publication:

Ph.D. Thesis
 Pub Date:
 1975
 Bibcode:
 1975PhDT........15B
 Keywords:

 Field Theory (Physics);
 PhotonElectron Interaction;
 Quantum Electrodynamics;
 Electromagnetic Fields;
 Energy Transfer;
 Matrix Theory;
 Atomic and Molecular Physics