Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Introduction_to_gauge_theory> ?p ?o. }
Showing items 1 to 30 of
30
with 100 items per page.
- Introduction_to_gauge_theory abstract "In physics, gauge invariance (also called gauge symmetry) is the property of a field theory in which different configurations of the underlying fields—which are not themselves directly observable—result in identical observable quantities. A theory with such a property is called a gauge theory. A transformation from one such field configuration to another is called a gauge transformation.Modern physical theories describe reality in terms of fields, e.g., the electromagnetic field, the gravitational field, and fields for the electron and all other elementary particles. A general feature of these theories is that none of these fundamental fields, which are the fields that change under a gauge transformation, can be directly measured. On the other hand, the observable quantities, namely the ones that can be measured experimentally—charges, energies, velocities, etc.—do not change under a gauge transformation, even though they are derived from the fields that do change. This (and any) kind of invariance under a transformation is called a symmetry.For example, in electromagnetism the electric and magnetic fields, E and B, are observable, while the potentials V ("voltage") and A (the vector potential) are not. Under a gauge transformation in which a constant is added to V, no observable change occurs in E or B.With the advent of quantum mechanics in the 1920s, and with successive advances in quantum field theory, the importance of gauge transformations has steadily grown. Gauge theories constrain the laws of physics, because all the changes induced by a gauge transformation have to cancel each other out when written in terms of observable quantities. Over the course of the 20th century, physicists gradually realized that all forces (fundamental interactions) arise from the constraints imposed by local gauge symmetries, in which case the transformations vary from point to point in space and time. Perturbative quantum field theory (usually employed for scattering theory) describes forces in terms of force-mediating particles called gauge bosons. The nature of these particles is determined by the nature of the gauge transformations. The culmination of these efforts is the Standard Model, a quantum field theory explaining all of the fundamental interactions except gravity.".
- Introduction_to_gauge_theory wikiPageID "291912".
- Introduction_to_gauge_theory wikiPageRevisionID "603423213".
- Introduction_to_gauge_theory hasPhotoCollection Introduction_to_gauge_theory.
- Introduction_to_gauge_theory subject Category:Concepts_in_physics.
- Introduction_to_gauge_theory subject Category:Differential_topology.
- Introduction_to_gauge_theory subject Category:Gauge_theories.
- Introduction_to_gauge_theory subject Category:Quantum_chromodynamics.
- Introduction_to_gauge_theory subject Category:Symmetry.
- Introduction_to_gauge_theory type Abstraction100002137.
- Introduction_to_gauge_theory type Cognition100023271.
- Introduction_to_gauge_theory type Concept105835747.
- Introduction_to_gauge_theory type Content105809192.
- Introduction_to_gauge_theory type Explanation105793000.
- Introduction_to_gauge_theory type FundamentalPhysicsConcepts.
- Introduction_to_gauge_theory type GaugeTheories.
- Introduction_to_gauge_theory type HigherCognitiveProcess105770664.
- Introduction_to_gauge_theory type Idea105833840.
- Introduction_to_gauge_theory type Process105701363.
- Introduction_to_gauge_theory type PsychologicalFeature100023100.
- Introduction_to_gauge_theory type Theory105989479.
- Introduction_to_gauge_theory type Thinking105770926.
- Introduction_to_gauge_theory comment "In physics, gauge invariance (also called gauge symmetry) is the property of a field theory in which different configurations of the underlying fields—which are not themselves directly observable—result in identical observable quantities. A theory with such a property is called a gauge theory.".
- Introduction_to_gauge_theory label "Introduction to gauge theory".
- Introduction_to_gauge_theory sameAs m.07s4sfc.
- Introduction_to_gauge_theory sameAs Q16743426.
- Introduction_to_gauge_theory sameAs Q16743426.
- Introduction_to_gauge_theory sameAs Introduction_to_gauge_theory.
- Introduction_to_gauge_theory wasDerivedFrom Introduction_to_gauge_theory?oldid=603423213.
- Introduction_to_gauge_theory isPrimaryTopicOf Introduction_to_gauge_theory.