Physics:Quantum scalar field: Difference between revisions
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{{Short description| | {{Short description|Field with spin-zero values over spacetime}} | ||
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''' | A '''quantum scalar field''' assigns a scalar value or operator to spacetime points. Scalar fields are the simplest relativistic quantum fields and are used as models for particles with spin zero, order parameters, and the Higgs field.<ref>{{cite web |title=Scalar field |url=https://en.wikipedia.org/wiki/Scalar_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_scalar_field_clean_yellow.png|thumb|280px|Scalar field: spin-zero field values over spacetime.]] | ||
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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|Quantum scalar field|1}} | {{Sourceattribution|Physics:Quantum scalar field|1}} | ||
Revision as of 22:04, 19 May 2026
A quantum scalar field assigns a scalar value or operator to spacetime points. Scalar fields are the simplest relativistic quantum fields and are used as models for particles with spin zero, order parameters, and the Higgs field.[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
- ↑ "Scalar field". https://en.wikipedia.org/wiki/Scalar_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 scalar field