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Quantum electrodynamics, commonly referred to as QED, is a quantum field theory of the electromagnetic force. Taking the example of the force between two electrons, the classical theory of electromagnetism would describe it as arising from the electric field produced by each electron at the position of the other.
quantum electrodynamics (QED), Quantum theory of the interactions of charged particles with the electromagnetic field. It describes the interactions of light with matter as well as those of charged particles with each other.
1 Quantum ElectroDynamics. The true quantum mechanical and relatistic theory of electromagnetism is called Quantum ElectroDynamics, or QED for shot. It combines Dirac equa-tion to describe electron (and of course positron) and Maxwell equation for photon. The actual calculations of quantum mechanical amplitudes are based on perturbation theory ...
This chapter gives an introduction to quantum electrodynamics, the quantum theory of the electromagnetic field and its interactions with electrons and other charged particles. We begin by formulating a quantum Hamiltonian for an electron in a classical electromagnetic field.
Quantum electrodynamics is the modern theory of electricity, magnetism, and light. The use of Feynman diagrams to describe particle interactions started here. chaos
Jan 31, 2024 · The theory of quantum electrodynamics, which describes interactions of electrically charged particles and light, has been checked to painstaking precision ( SN: 2/23/23...
Jan 1, 2016 · Introduction to Quantum Electrodynamics. The most general theory of electrons and photons in electromagnetic fields is called quantum electrodynamics (QED) (see, e.g., [ 1 ]). It combines special relativity and quantum mechanics.
