a relativistic quantum mechanical theory concerned with electromagnetic interactions
Abbreviation: QED
quantum electrodynamics in American English
[with sing. v.]
Physics
a theory that applies the principles of the quantum theory to electrodynamics: it describes how photons interact electromagnetically with electrons, protons, etc.
Examples of 'quantum electrodynamics' in a sentence
quantum electrodynamics
What excited his passion was quantum electrodynamics, a new and profound theoretical field.
The Times Literary Supplement (2013)
He acquired an international reputation in quantum electrodynamics, which describes how light and matter interact.
Times, Sunday Times (2008)
However, he was never reconciled to the techniques of'renormalisation ', which around 1950 led to a breakthrough in quantum electrodynamics.