Journal article
Investigating the Lorentz Invariance Violation effect using different cosmological backgrounds
- Abstract:
- Familiar concepts in physics, such as Lorentz symmetry, are expected to be broken at energies approaching the Planck energy scale as predicted by several quantum-gravity theories. However, such very large energies are unreachable by current experiments on Earth. Current and future Cherenkov telescope facilities may have the capability to measure the accumulated deformation from Lorentz symmetry for photons traveling over large distances via energy-dependent time delays. One of the best natural laboratories to test Lorentz Invariance Violation~(LIV) signatures are Gamma-ray bursts~(GRBs). The calculation of time delays due to the LIV effect depends on the cosmic expansion history. In almost all previous works calculating time lags due to the LIV effect, the standard $\Lambda$CDM (or concordance) cosmological model is assumed. In this paper, we investigate whether the LIV signature is significantly different when assuming alternatives to the $\Lambda$CDM cosmological model. Specifically, we consider cosmological models with a non-trivial dark-energy equation of state ($w \neq -1$), such as the standard Chevallier-Polarski-Linder~(CPL) parameterization, the quadratic parameterization of the dark-energy equation of state, and the Pade parameterizations. We find that the relative difference in the predicted time lags is small, of the order of at most a few percent, and thus likely smaller than the systematic differences of possible measurements currently or in the near future.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 375.1KB, Terms of use)
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- Publisher copy:
- 10.1088/1361-6382/ad1122
Authors
+ Science and Technology Facilities Council
More from this funder
- Funder identifier:
- https://ror.org/057g20z61
- Grant:
- ST/L006499/1
- ST/X001598/1
- ST/V006355/1
- ST/S002952/1
- Publisher:
- IOP Publishing
- Journal:
- Classical and Quantum Gravity More from this journal
- Volume:
- 41
- Issue:
- 1
- Article number:
- 015022
- Publication date:
- 2023-12-13
- Acceptance date:
- 2023-11-30
- DOI:
- EISSN:
-
1361-6382
- ISSN:
-
0264-9381
- Language:
-
English
- Keywords:
- Pubs id:
-
1574892
- Local pid:
-
pubs:1574892
- Deposit date:
-
2023-12-02
Terms of use
- Copyright holder:
- Abdalla et al.
- Copyright date:
- 2023
- Rights statement:
- © 2023 The Author(s). Published by IOP Publishing Ltd. Original Content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
- Licence:
- CC Attribution (CC BY)
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