2010/05/04 by Sabine Hossenfelder, Hossenfelder, Sabine
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Noncommutative and Quantum Gravity Theories #Quantum Mechanics and Applications
paper · pdf · doi:10.48550/arxiv.1005.0535
openalex publication_date 2010/05/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
It was previously shown that models with deformations of special relativity\nthat have an energy-dependent yet observer-independent speed of light suffer\nfrom nonlocal effects that are in conflict with observation to very high\nprecision. In a recent paper it has been proposed that these paradoxa arise\nonly in the classical limit and can be prevented by an ad-hoc introduction of a\nquantum uncertainty that would serve to hide the nonlocality. We will show here\nthat the proposed ansatz for this resolution is inconsistent with\nobserver-independence and, when corrected, is in agreement with the earlier\nargument that revealed the troublesome nonlocality. We further offer an\nalternative derivation for the energy-dependent speed of light in the model\nused.\n