Unveiling quantum gravity: New results from IceCube and Fermi data

In a research revealed in Nature Astronomy, a group of researchers from the College of Naples “Federico II,” the College of Wroclaw, and the College of Bergen examined a quantum-gravity mannequin of particle propagation by which the velocity of ultrarelativistic particles decreases with rising vitality.

This impact is anticipated to be extraordinarily small, proportional to the ratio between particle vitality and the Planck scale, however when observing very distant astrophysical sources, it could accumulate to observable ranges.

The investigation used gamma-ray bursts noticed by the Fermi telescope and ultra-high-energy neutrinos detected by the IceCube Neutrino Observatory, testing the speculation that some neutrinos and a few gamma-ray bursts might need a common origin however are noticed at completely different occasions on account of the energy-dependent discount in velocity.

“By combining knowledge from IceCube and Fermi, we discovered preliminary proof supporting quantum gravity fashions that predict this impact. This marks a significant milestone within the area of quantum gravity analysis since it’s the first time that such a degree of quantum gravity-supportive statistical proof is discovered,” says corresponding writer, Professor Giovanni Amelino-Camelia of the College of Naples on behalf of the group.

“Whereas these findings are preliminary, they supply a robust basis for additional detailed investigations as we proceed to collect knowledge from our gamma-ray and neutrino telescopes. Even when future knowledge had been to not affirm this impact, our findings would nonetheless present stringent limits on the parameters of related fashions, which might already symbolize a uncommon and notable step for quantum gravity analysis,” provides Amelino-Camelia.