Cited by 240Noncommutative and Quantum Gravity TheoriesAstrophysics and Cosmic PhenomenaCosmology and Gravitation Theories

The DOI matches its Crossref record; 112 of the 114 references it cites were found in a registry or an index.

Threshold effects and Planck scale Lorentz violation: Combined constraints from high energy astrophysics

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Jacobson, T., Liberati, S., Mattingly, D.·2003·Physical Review D

Abstract

Recent work has shown that dispersion relations with Planck scale Lorentz violation can produce observable effects at energies many orders of magnitude below the Planck energy M. This opens a window on physics that may reveal quantum gravity phenomena. It has already constrained the possibility of Planck scale Lorentz violation, which is suggested by some approaches to quantum gravity. In this work we carry out a systematic analysis of reaction thresholds, allowing unequal deformation parameters for different particle dispersion relations. The thresholds are found to have some unusual properties compared with standard ones, such as asymmetric momenta for pair creation and upper thresholds. The results are used together with high energy observational data to determine combined constraints. We focus on the case of photons and electrons, using vacuum \ifmmode \check{C}\else \v{C}\fi{}erenkov, photon decay, and photon annihilation processes to determine order unity constraints on the parameters controlling $O(E/M)$ Lorentz violation. Interesting constraints for protons (with photons or pions) are obtained even at $O({(E/M)}^{2}),$ using the absence of vacuum \ifmmode \check{C}\else \v{C}\fi{}erenkov and the observed GZK cutoff for ultrahigh energy cosmic rays. A strong \ifmmode \check{C}\else \v{C}\fi{}erenkov limit using atmospheric PeV neutrinos is possible for $O(E/M)$ deformations provided the rate is high enough. If detected, ultrahigh energy cosmological neutrinos might yield limits at or even beyond $O({(E/M)}^{2}).$

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  1. G. T. Zatsepin, 1966, JETP Lett., 4, 78
  2. F. A. Aharonian, 1999, Astron. Astrophys., 349, 11

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Metadata

Authors
Jacobson, T., Liberati, S., & Mattingly, D.
Affiliations
University of Maryland, College Park (US)
Venue
Physical Review D
Published
2003-06-11
Volume
67
Issue
12
ISSN
  • 0556-2821 (ISSN-L)
  • 1089-4918
OpenAlex
W2064950588
Cited by
240
References
114
Citations by year
2026: 5 · 2025: 6 · 2024: 5 · 2023: 10 · 2022: 9 · 2021: 11 · 2020: 6 · 2019: 4 · 2018: 5 · 2017: 9 · 2016: 7 · 2015: 6 · 2014: 10 · 2013: 9 · 2012: 9
FWCI
14.76
Type
journal article
Language
en
Open access
Locations
  • Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (publishedVersion)
  • arXiv (Cornell University) (publishedVersion)
  • CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
  • SDL (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Noncommutative and Quantum Gravity Theories
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Astrophysics and Cosmic Phenomena
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
Keywords
Lorentz violation, Planck scale, dispersion relation, response threshold, quantum gravity, photon decay, photon annihilation, pair production, GZK cutoff, ultra-high-energy cosmic rays, atmospheric neutrinos, PeV neutrinos, protons, pion

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