counterterm
- noun
- /ˈkaʊntərˌtɜrm/
- Specialized
:
contratermino
- In quantum field theory, a counterterm is used to cancel divergences in calculations.
- collinear counterterm
So with all the right symmetry, essentially this is the only condition those counterterms should satisfy.
- So with all the right symmetry, essentially this is the only condition those counterterms should satisfy.
Examples
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So with all the right symmetry, essentially this is the only condition those counterterms should satisfy.
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The divergent piece in even dimensions can be absorbed by counterterms (including certain higher-derivative operators in Formula omitted).
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Through this counterterm, a dependence on the factorization scale enters.
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Some of these operators appear as counterterms in even dimension. Formula omitted, in which case the remaining finite contribution is what we consider here.
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The reader can refer to Appendix A for more details about the counterterms in the cut-off regularization scheme.
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The integrated subtraction terms, together with the collinear counterterm, are commonly reorganized into Formula omitted and Formula omitted operators through the following identification.
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In order to arrive at a finite result in the omitted formula, cf. Eq. (2.2), the real emission correction and the collinear counterterms are added.
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To ensure accurate predictions, physicists include a counterterm for the effects of higher energy fluctuations.
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The renormalization process often requires adjusting counterterms to eliminate infinite contributions.
Surface Forms
Morphology
Etymology
Counterterm comes from the parts counter ('against' or 'opposite') and term ('word' or 'part'). In physics and math a counterterm is a part you add that works 'against' an unwanted infinite or very large piece, so it cancels the problem.
