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Derivation of a Vacuum Refractive Index in a Stringy Space-Time Foam Model
It has been suggested that energetic photons propagating in vacuo should experience a non-trivial refractive index due to the foamy structure of space-time induced by quantum-gravitational fluctuations. The sensitivity of recent astrophysical observations, particularly of AGN Mk501 by the MAGIC Coll...
Autores principales: | , , |
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Lenguaje: | eng |
Publicado: |
2008
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2008.06.029 http://cds.cern.ch/record/1101010 |