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Witten-Veneziano from Green-Schwarz
We consider the U(1) problem within the AdS/CFT framework. We explain how the Witten-Veneziano formula for the eta' mass is related to a generalized Green-Schwarz mechanism. The closed string mode, that cancels the anomaly of the gauged U(1) axial symmetry, is identified with the eta' meso...
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| Lenguaje: | eng |
| Publicado: |
2004
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| Acceso en línea: | https://dx.doi.org/10.1088/1126-6708/2004/06/019 http://cds.cern.ch/record/733195 |