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Conformal Tachyons
We study tachyons conformally coupled to the background geometry of a Milne universe. The causality of superluminal signal transfer is scrutinized in this context. The cosmic time of the comoving frame determines a distinguished time order for events connected by superluminal signals. An observer ca...
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| Lenguaje: | eng |
| Publicado: |
2000
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| Acceso en línea: | http://cds.cern.ch/record/539003 |