String chopping and time-ordered products of linear string-localized quantum fields
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| Autoři: | , , |
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| Médium: | artículo original |
| Datum vydání: | 2018 |
| Popis: | For a renormalizability proof of perturbative models in the Epstein-Glaser scheme with string-localized quantum fields, one needs to know what freedom one has in the definition of time-ordered products of the interaction Lagrangian. This paper provides a first step in that direction. The basic issue is the presence of an open set of n-tuples of strings which cannot be chronologically ordered. We resolve it by showing that almost all such string configurations can be dissected into finitely many pieces which can indeed be chronologically ordered. This fixes the time-ordered products of linear field factors outside a nullset of string configurations. |
| Země: | Kérwá |
| Instituce: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/81785 |
| On-line přístup: | https://link.springer.com/article/10.1007%2Fs11040-017-9258-9 https://hdl.handle.net/10669/81785 |
| Klíčové slovo: | Relativistic quantum field theory Locality Epstein-Glaser perturbative construction Time-ordered products |