Evidence of ‘Negative Time’ Found in Quantum Physics Experiment

Physicists at the University of Toronto observed photons seemingly exiting a material before entering it, demonstrating negative time in quantum interactions. By shooting photons through ultracold rubidium atoms and measuring atomic excitation, they found photons sometimes leaving atoms quicker than expected. This phenomenon is explained by the probabilistic nature of quantum interactions, where photon absorption and reemission can occur across various temporal values, including negative ones. While not changing our understanding of time, the study reveals new surprises in quantum physics.