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arXiv · hep-ph/0610324

Astrophysical Limits on Lorentz Violation for All Charged Species

Brett Altschul
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Abstract

If Lorentz violation exists, it will affect the thresholds for pair creation processes. Lorentz-violating operators that change the maximum velocities of charged particles may increase or decrease the extinction rate of gamma-rays moving through space. If the emissions from high-energy astrophysical sources do not show any signs of anomalous absorption, this allows us to place bounds on the Lorentz-violating c coefficients for multiple species of charged particles. The bounds for a species of mass m_X based on observing photons at an energy E can be O(m_X^2/E^2), which corresponds to limits at the 10^(-15)(m_X^2/m_e^2) level for the most energetic photons.

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Brett Altschul. 2006-10-24. Astrophysical Limits on Lorentz Violation for All Charged Species. https://doi.org/10.1016/j.astropartphys.2007.08.003

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