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High-order behaviour and summation methods in perturbative QCD
After reviewing basic facts about large-order behaviour of perturbation expansions in various fields of physics, I consider several alternatives to the Borel summation method and discuss their relevance to different physical situations. Then I convey news about the singularities in the Borel plane,...
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| Lenguaje: | eng |
| Publicado: |
1995
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| Acceso en línea: | http://cds.cern.ch/record/292873 |
| Sumario: | After reviewing basic facts about large-order behaviour of perturbation expansions in various fields of physics, I consider several alternatives to the Borel summation method and discuss their relevance to different physical situations. Then I convey news about the singularities in the Borel plane, and discuss the topical subject of the resummation of renormalon chains and its application in various QCD processes. |
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