Physics:Quantum electromagnetic field: Difference between revisions
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{{Short description| | {{Short description|Electric and magnetic field treated as a physical field and quantum gauge field}} | ||
{{Quantum matter backlink|Fields}} | {{Quantum matter backlink|Fields}} | ||
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''' | The '''quantum electromagnetic field''' is the field associated with electric and magnetic phenomena. In quantum electrodynamics its excitations are photons, and its coupling to charged matter explains emission, absorption, scattering, and electromagnetic forces.<ref>{{cite web |title=Electromagnetic field |url=https://en.wikipedia.org/wiki/Electromagnetic_field |website=Wikipedia |access-date=20 May 2026}}</ref><ref>{{cite book |last=Schwartz |first=Matthew D. |title=Quantum Field Theory and the Standard Model |publisher=Cambridge University Press |year=2014 |id=ISBN 978-1-107-03473-0}}</ref> | ||
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[[File: | [[File:Quantum_electromagnetic_field_yellow.png|thumb|280px|Electromagnetic field: electric and magnetic quantum modes.]] | ||
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== Core idea == | |||
The field viewpoint replaces isolated particle pictures with states, modes, operators, and excitations. It is especially powerful when particle number can change.<ref>{{cite book |last=Schwartz |first=Matthew D. |title=Quantum Field Theory and the Standard Model |publisher=Cambridge University Press |year=2014 |id=ISBN 978-1-107-03473-0}}</ref> | |||
== Use in quantum physics == | |||
Field concepts organize interactions, conservation laws, measurement outcomes, and effective descriptions across particle physics, optics, condensed matter, and cosmology.<ref>{{cite book |last1=Peskin |first1=Michael E. |last2=Schroeder |first2=Daniel V. |title=An Introduction to Quantum Field Theory |publisher=Addison-Wesley |year=1995 |id=ISBN 978-0-201-50397-5}}</ref> | |||
=See also= | =See also= | ||
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{{Author|Harold Foppele}} | {{Author|Harold Foppele}} | ||
{{Sourceattribution| | {{Sourceattribution|Physics:Quantum electromagnetic field|1}} | ||
Revision as of 22:04, 19 May 2026
The quantum electromagnetic field is the field associated with electric and magnetic phenomena. In quantum electrodynamics its excitations are photons, and its coupling to charged matter explains emission, absorption, scattering, and electromagnetic forces.[1][2]
Core idea
The field viewpoint replaces isolated particle pictures with states, modes, operators, and excitations. It is especially powerful when particle number can change.[3]
Use in quantum physics
Field concepts organize interactions, conservation laws, measurement outcomes, and effective descriptions across particle physics, optics, condensed matter, and cosmology.[4]
See also
Table of contents (84 articles)
Index
Composite matter
Sub-molecular
Full contents
1. Materials (6) Back to index
2. Matter (5) Back to index
3. Plasma and fusion physics (6) Back to index
4. Molecules (6) Back to index
5. Nuclear matter (6) Back to index
6. Atoms (7) Back to index
7. Particles (12) Back to index
8. Composite particles (12) Back to index
9. Fields (12) Back to index
10. Vacuum and spacetime (12) Back to index
References
- ↑ "Electromagnetic field". https://en.wikipedia.org/wiki/Electromagnetic_field.
- ↑ Schwartz, Matthew D. (2014). Quantum Field Theory and the Standard Model. Cambridge University Press. ISBN 978-1-107-03473-0.
- ↑ Schwartz, Matthew D. (2014). Quantum Field Theory and the Standard Model. Cambridge University Press. ISBN 978-1-107-03473-0.
- ↑ Peskin, Michael E.; Schroeder, Daniel V. (1995). An Introduction to Quantum Field Theory. Addison-Wesley. ISBN 978-0-201-50397-5.
Author: Harold Foppele
Source attribution: Physics:Quantum electromagnetic field