Eliminativism and the QCD \(\theta_{\mathrm{YM}}\)-term: what gauge transformations cannot do (Q6570235)
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scientific article; zbMATH DE number 7879203
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Eliminativism and the QCD \(\theta_{\mathrm{YM}}\)-term: what gauge transformations cannot do |
scientific article; zbMATH DE number 7879203 |
Statements
Eliminativism and the QCD \(\theta_{\mathrm{YM}}\)-term: what gauge transformations cannot do (English)
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10 July 2024
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The nature of the \((F\wedge F)\) term in the Yang-Mills models is investigated. It is argued that while this term (its trace) is fully gauge-invariant (whether the gauge transformation is small or large), and is a total derivative (hence not affecting the equation of motion), its integral is a topological quantity, and hence is physical (observable).
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Yang-Mills theory
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fiber bundle
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bundle topology
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gauge degree of freedom
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full gauge-invariance
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second Chern number
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