Researchers have, for the first time, directly observed the universal excitation spectrum predicted by conformal field theory (CFT) using a quantum simulator. The findings, published in *Nature* on August 19, 2026, demonstrate a key theoretical framework in physics.
The observation was achieved through measurements conducted on an array of optically trapped neutral atoms at a quantum phase transition. This setup allowed scientists to probe the behavior of the system as it underwent a fundamental change in its properties.
The significance of this research lies in its confirmation of CFT predictions. Conformal field theory is a mathematical framework used to describe the behavior of physical systems at critical points, where interactions become infinitely strong. The observed spectra directly correspond to the theoretical predictions of CFT, providing strong evidence for its validity. The research, detailed in the article with doi:10.1038/s41586-026-10904-x, offers insights into the fundamental laws governing quantum systems and could have implications for various fields of physics.
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