DETECTION METHOD AND OBSERVED DATA OF HIGH-ENERGY GAMMA RAYS UNDER THE INFLUENCE OF QUANTUM GRAVITY

The interaction of high-energy particles affected by quantum gravity is argued from the experimental viewpoint of raising a question, "our detection method for high-energy gamma-rays supplies trustworthy observation data and we are now seeing the true image of the universe through high-energy gamma-rays?" The modified dispersion relation (MDR) for particles' energy and momentum is applied to the equation of energy-momentum conservation in particle reactions, to study the restriction imposed on the kinematic state of high-energy particles by the Lorentz invariance violation (LIV) due to quantum gravity, as a function of the incident particle energy of the reaction. The result suggests that the interaction utilized for gamma-ray detection is not free from the effect of quantum gravity when gamma-ray energy is higher than 10(13) similar to 10(17) eV depending on models of MDR. Discussion is presented on the prospect of finding clear evidence of the LIV effect from gamma-ray observations, as well as on the radiation and propagation mechanism of gamma-rays under the influence of the LIV effect.