A new AI system named AI Theorist has been developed to autonomously discover physical models from experimental data. This system was applied to $\alpha$-RuCl$_3$, a material being studied for its potential as a Kitaev quantum spin liquid. AI Theorist analyzed optical spectra and photocurrent observations, proposing a novel interpretation that identifies distinct excitonic states with unique optical selection rules and spatial distributions. This work represents the first instance of an AI system independently creating a physical model to explain new experimental findings in quantum materials, utilizing first-principles calculations. AI
IMPACT This AI system could accelerate scientific discovery by automating the process of model generation from experimental data.
RANK_REASON The item describes a new AI system applied to a scientific research problem, detailed in an arXiv preprint. [lever_c_demoted from research: ic=1 ai=1.0]
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