fotonveld
Fotonveld (photon field) is the quantum field associated with photons, the quanta of the electromagnetic interaction. In quantum field theory, the electromagnetic field is quantized and its excitations are photons. The photon field is a massless, spin-1 gauge field that mediates electromagnetic forces.
In the standard formulation, the dynamics are described by a gauge-invariant Lagrangian, typically written in terms
Quantum mechanically, the photon field is described by field operators that create and annihilate photons. The
Photons interact with charged matter through minimal coupling, leading to phenomena described by quantum electrodynamics (QED).
Applications and manifestations include coherent light sources, spectroscopy, cosmic microwave background radiation, and various quantum optical