CPT violation parametrized by δΔm²₃₁ induces a phase shift degenerate with δ_CP; existing atmospheric data constrains |δΔm²₃₁| ≤ 0.57×10^{-3} eV² at 90% CL.
Amelino-Camelia, J
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abstract
The recent confirmation that at least some gamma-ray bursters (GRBs) are indeed at cosmological distances raises the possibility that observations of these could provide interesting constraints on the fundamental laws of physics. Here we demonstrate that the fine-scale time structure and hard spectra of GRB emissions are very sensitive to the possible dispersion of electromagnetic waves in vacuo with velocity differences $\delta v \sim E/E_{\QG}$, as suggested in some approaches to quantum gravity. A simple estimate shows that GRB measurements might be sensitive to a dispersion scale $E_{QG}$ comparable to the Planck energy scale $E_{P} \sim 10^{19}$ GeV, sufficient to test some of these theories, and we outline aspects of an observational programme that could address this goal.
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In the classical basis the non-bijective momentum map induces branch-dependent κ-deformed back-to-back correlations for two-particle states obeying vanishing total momentum.
GUP-corrected rotating wormholes based on the Dymnikova-Schwinger profile produce split co- and counter-rotating photon spheres and asymmetric shadows.
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When CPT Violation Hides in Plain Sight: How CP Measurements Are Compromised and How to Fix Them
CPT violation parametrized by δΔm²₃₁ induces a phase shift degenerate with δ_CP; existing atmospheric data constrains |δΔm²₃₁| ≤ 0.57×10^{-3} eV² at 90% CL.
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Kinematical correlations via $\kappa$-Poincar\'e coproducts
In the classical basis the non-bijective momentum map induces branch-dependent κ-deformed back-to-back correlations for two-particle states obeying vanishing total momentum.
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Dymnikova-Schwinger quantum-corrected slowly rotating wormholes: Photon and spinning particle dynamics
GUP-corrected rotating wormholes based on the Dymnikova-Schwinger profile produce split co- and counter-rotating photon spheres and asymmetric shadows.