| Автор | Roberta Armillis |
| Автор | Claudio Corianò |
| Автор | Luigi Delle Rose |
| Автор | Marco Guzzi |
| Дата выпуска | 2009-12-01 |
| dc.description | We analyze the role played by anomaly poles in an anomalous gauge theory by discussing their signature in the corresponding off-shell effective action. The origin of these contributions, in the most general kinematical case, is elucidated by performing a complete analysis of the anomaly vertex at perturbative level. We use two independent (but equivalent) representations: the Rosenberg representation and the longitudinal/transverse (L/T) parameterization, used in recent studies of g−2 of the muon and in the proof of non-renormalization theorems of the anomaly vertex. The poles extracted from the L/T parameterization do not couple in the infrared for generic anomalous vertices, as in Rosenberg, but we show that they are responsible for the violations of unitarity in the UV region, using a class of pole-dominated amplitudes. We conclude that consistent formulations of anomalous models require necessarily the cancellation of these polar contributions. Establishing the UV significance of these terms provides a natural bridge between the anomalous effective action and its completion by a nonlocal theory. Some additional difficulties with unitarity of the mechanism of inflow in extra dimensional models with an anomalous theory on the brane, due to the presence of anomaly poles, are also pointed out. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Anomalous U(1) models in four and five dimensions and their anomaly poles |
| Тип | paper |
| DOI | 10.1088/1126-6708/2009/12/029 |
| Electronic ISSN | 1029- 8479 |
| Print ISSN | 1126-6708 |
| Журнал | Journal of High Energy Physics |
| Том | 2009 |
| Первая страница | 29 |
| Последняя страница | 029 |
| Аффилиация | Roberta Armillis; Dipartimento di Fisica, Università del Salento and INFN Sezione di Lecce, Via Arnesano 73100 Lecce, Italy |
| Аффилиация | Claudio Corianò; Dipartimento di Fisica, Università del Salento and INFN Sezione di Lecce, Via Arnesano 73100 Lecce, Italy |
| Аффилиация | Luigi Delle Rose; Dipartimento di Fisica, Università del Salento and INFN Sezione di Lecce, Via Arnesano 73100 Lecce, Italy |
| Аффилиация | Marco Guzzi; Dipartimento di Fisica, Università del Salento and INFN Sezione di Lecce, Via Arnesano 73100 Lecce, Italy |
| Выпуск | 12 |
