électrodynamique quantique

Électrodynamique quantique, or quantum electrodynamics (QED), is the branch of physics that describes how light and matter interact at the smallest scales. It combines quantum mechanics and special relativity to explain phenomena like the emission and absorption of photons by charged particles such as electrons. QED models these interactions through the exchange of particles called photons, and uses advanced mathematics to predict outcomes with extraordinary precision. It is one of the most successful theories in physics, accurately describing electromagnetic forces and phenomena at the quantum level.