Gauge theory — For a generally accessible and less technical introduction to the topic, see Introduction to gauge theory. In physics, a gauge theory is a type of field theory in which the Lagrangian is invariant under a continuous group of local transformations … Wikipedia
Gauge fixing — Quantum field theory (Feynman diagram) … Wikipedia
Gauge boson — In particle physics, gauge bosons are bosonic particles that act as carriers of the fundamental forces of nature. More specifically, elementary particles whose interactions are described by gauge theory exert forces on each other by the exchange… … Wikipedia
Gauge covariant derivative — The gauge covariant derivative (pronEng|ˌgeɪdʒ koʊˌvɛəriənt dɪˈrɪvətɪv) is like a generalization of the covariant derivative used in general relativity. If a theory has gauge transformations, it means that some physical properties of certain… … Wikipedia
gauge theory — ▪ physics class of quantum field theory, a mathematical theory involving both quantum mechanics and Einstein s special theory of relativity that is commonly used to describe subatomic particles and their associated wave fields. In a gauge… … Universalium
Field (physics) — The magnitude of an electric field surrounding two equally charged (repelling) particles. Brighter areas have a greater magnitude. The direction of the field is not visible … Wikipedia
Gauge symmetry — In gauge symmetry, gauge means measure , and symmetry means stays the same . Geometry is the study of the properties of objects that do not change when they move around. An object is symmetric if some motion leaves it looking the same, for… … Wikipedia
Gauge anomaly — In theoretical physics, a gauge anomaly is an example of an anomaly: it is an effect of quantum mechanics usually a one loop diagram that invalidates the gauge symmetry of a quantum field theory; i.e. of a gauge theory. Anomalies in gauge… … Wikipedia
gauge — I. noun also gage Etymology: Middle English gauge, from Anglo French Date: 15th century 1. a. a measurement (as of linear dimension) according to some standard or system: as (1) the distance between the rails of a railroad (2) the size of a… … New Collegiate Dictionary
field research — / fi:ld rɪˌsɜ:tʃ/, field work / fi:ld wɜ:k/ noun looking for information that is not yet published and must be obtained in surveys ● They had to do a lot of fieldwork before they found the right market for the product. ● Field research is carried … Marketing dictionary in english