Physics:Quantum fields/field: Difference between revisions
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A '''field''' is a physical quantity that has a value at every point in space and time. In modern physics, fields provide the fundamental description of nature, underlying both particles and interactions. | '''field''' is a Book II topic in the Quantum Collection. A '''field''' is a physical quantity that has a value at every point in space and time. In modern physics, fields provide the fundamental description of nature, underlying both particles and interactions. In quantum field theory, particles are interpreted as excitations of underlying fields rather than independent classical objects. Fields can be quantized, coupled, and transformed by symmetries, producing creation and annihilation processes. This field viewpoint explains scattering, vacuum fluctuations, radiation, particle statistics, and the structure of the Standard Model. | ||
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[[File: | [[File:Quantum_fields_field_concept_map.svg|thumb|280px|field in the Quantum Collection.]] | ||
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Latest revision as of 23:54, 23 May 2026
field is a Book II topic in the Quantum Collection. A field is a physical quantity that has a value at every point in space and time. In modern physics, fields provide the fundamental description of nature, underlying both particles and interactions. In quantum field theory, particles are interpreted as excitations of underlying fields rather than independent classical objects. Fields can be quantized, coupled, and transformed by symmetries, producing creation and annihilation processes. This field viewpoint explains scattering, vacuum fluctuations, radiation, particle statistics, and the structure of the Standard Model.
Description
Fields describe how physical quantities vary across space and time. Classical examples include electric and gravitational fields, while in quantum theory fields are the basis for describing particles.
Properties
- defined at every point in space and time
- can carry energy and momentum
- underlying description of physical systems
See also
Table of contents (217 articles)
Index
Full contents
References
Source attribution: Physics:Quantum fields/field
