| quantum electrodynamics | has gauge symmetry U(1) (Abelian group) |  |
| has exchange quantum photon | |
| has acronym QED | |
| has definition Gauge theory describing the interactions between electrically charged particles through the electro-magnetic field. | |
| is an instance of gauge theory | |
| quantum field theory | has symmetry relativistic invariance | |
| has applicability elementary particles | |
| has implication quantum fields are the ultimate reality and particles are merely the localized quanta of these fields. | |
| quantum mechanics | has constraint certain quantities (e.g. energy, angular momentum, light) can only exist in certain discrete amounts, called quanta. | |
| has equation Any physical system, such as an atom, may be viewed as existing as a combination of its possible states, each of which has a certain probability. | |
| has synonym quantum theory | |
| has discoverer Planck | |
| theory | has validity correct or incorrect with caveats | |
| has author or reasearch group | |
| has domain a field of research | |
| has date or a range of dates for which the theory was active | |
Astronomy View all facts Glossary Help
