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Cavity Quantum Electrodynamics

Quantum electrodynamics (QED), a theory about radiation fields, is the most accurate and widely applicable physical theory currently known. Cavity QED examines what happens to those radiation fields when they are confined to a cavity (a cavity can be thought of as an atomic pot-hole). Confined radiation fields interact quite differently with atoms than unconfined fields. This difference gives cavity QED the potential for some important applications that ordinary QED does not have, such as applications to laser technology, and to the high precision measurement of time and frequency.

Cavity QED examines what happens to those radiation fields when they are confined to a cavity (a cavity can be thought of as an atomic pot-hole). Confined radiation fields interact quite differently with atoms than unconfined fields.

Short-distance Behavior of Quantum Electrodynamics and the Callan--Symanzik Equation for the Photon Propagator

The short-distance behaviour of the photon propagator is discussed within the context of the corresponding Callan-Symanzik equation.

The short-distance behaviour of the photon propagator is discussed within the context of the corresponding Callan-Symanzik equation.

Quantum Electrodynamics

Theory

The Standard Model of particle physics is composed of several theories that are added together. The most precise component theory is the theory of quantum electrodynamics or QED. In this video, Fermilab's Dr. Don Lincoln explains how theoretical QED calculations can be done. This video links to other videos, giving the viewer a deep understanding of the process.

The Standard Model of particle physics is composed of several theories that are added together. The most precise component theory is the theory of quantum electrodynamics or QED.