Photon dispersion in causal sets
| Autor: | Scargle, Jeffrey D., Simić, Slobodan N. |
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| Rok vydání: | 2009 |
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| Druh dokumentu: | Working Paper |
| Popis: | A very small dispersion in the speed of light may be observable in Fermi time- and energy-tagged data on variable sources, such as gamma-ray bursts (GRB) and active galactic nuclei (AGN). We describe a method to compute the size of this effect by applying the Feynman sum-over-histories formalism for relativistic quantum electrodynamics to a discrete model of space-time called \emph{causal set theory}. Comment: 2009 Fermi Symposium, eConf Proceedings C091122. 5 pages, 2 figures |
| Databáze: | arXiv |
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