Redshift and lateshift from homogeneous and isotropic modified dispersion relations
Observables which would indicate a modified vacuum dispersion relations, possibly caused by quantum gravity effects, are a four momentum dependence of the cosmological redshift and the existence of a so called lateshift effect for massless or very light particles. Existence or non-existence of the l...
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| Format: | Article |
| Language: | English |
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Elsevier
2018-05-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269318302065 |
| _version_ | 1811303589882101760 |
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| author | Christian Pfeifer |
| author_facet | Christian Pfeifer |
| author_sort | Christian Pfeifer |
| collection | DOAJ |
| description | Observables which would indicate a modified vacuum dispersion relations, possibly caused by quantum gravity effects, are a four momentum dependence of the cosmological redshift and the existence of a so called lateshift effect for massless or very light particles. Existence or non-existence of the latter is currently analyzed on the basis of the available observational data from gamma-ray bursts and compared to predictions of specific modified dispersion relation models. We consider the most general perturbation of the general relativistic dispersion relation of freely falling particles on homogeneous and isotropic spacetimes and derive the red- and lateshift to first order in the perturbation. Our result generalizes the existing formulae in the literature and we find that there exist modified dispersion relations causing both, one or none of the two effects to first order. Keywords: Quantum gravity phenomenology, Lateshift, Modified dispersion relation, Lorentz invariance violations |
| first_indexed | 2024-04-13T07:49:37Z |
| format | Article |
| id | doaj.art-e0c54120559840d6a98ea1b2738434e0 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-13T07:49:37Z |
| publishDate | 2018-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-e0c54120559840d6a98ea1b2738434e02022-12-22T02:55:34ZengElsevierPhysics Letters B0370-26932018-05-01780246250Redshift and lateshift from homogeneous and isotropic modified dispersion relationsChristian Pfeifer0Laboratory of Theoretical Physics, Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411 Tartu, EstoniaObservables which would indicate a modified vacuum dispersion relations, possibly caused by quantum gravity effects, are a four momentum dependence of the cosmological redshift and the existence of a so called lateshift effect for massless or very light particles. Existence or non-existence of the latter is currently analyzed on the basis of the available observational data from gamma-ray bursts and compared to predictions of specific modified dispersion relation models. We consider the most general perturbation of the general relativistic dispersion relation of freely falling particles on homogeneous and isotropic spacetimes and derive the red- and lateshift to first order in the perturbation. Our result generalizes the existing formulae in the literature and we find that there exist modified dispersion relations causing both, one or none of the two effects to first order. Keywords: Quantum gravity phenomenology, Lateshift, Modified dispersion relation, Lorentz invariance violationshttp://www.sciencedirect.com/science/article/pii/S0370269318302065 |
| spellingShingle | Christian Pfeifer Redshift and lateshift from homogeneous and isotropic modified dispersion relations Physics Letters B |
| title | Redshift and lateshift from homogeneous and isotropic modified dispersion relations |
| title_full | Redshift and lateshift from homogeneous and isotropic modified dispersion relations |
| title_fullStr | Redshift and lateshift from homogeneous and isotropic modified dispersion relations |
| title_full_unstemmed | Redshift and lateshift from homogeneous and isotropic modified dispersion relations |
| title_short | Redshift and lateshift from homogeneous and isotropic modified dispersion relations |
| title_sort | redshift and lateshift from homogeneous and isotropic modified dispersion relations |
| url | http://www.sciencedirect.com/science/article/pii/S0370269318302065 |
| work_keys_str_mv | AT christianpfeifer redshiftandlateshiftfromhomogeneousandisotropicmodifieddispersionrelations |