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- URN zum Zitieren dieses Dokuments:
- urn:nbn:de:bvb:355-epub-454623
- DOI zum Zitieren dieses Dokuments:
- 10.5283/epub.45462
Zusammenfassung
Perturbative expansions in many physical systems yield "only" asymptotic series which are not even Borel resummable. Interestingly, the corresponding ambiguities point to nonperturbativc physics. We numerically verify this renormalon mechanism for the first time in two-dimensional sigma models, that, like four-dimensional gauge theories, are asymptotically free and generate a strong scale through ...
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