Abstract
At ultracold temperatures (T\(\lesssim \) 1 mK), atoms and molecules move very slowly, which translates into negligible Doppler broadening of spectra. In addition, owing to the diluteness of typical ultracold systems, the pressure broadening of the spectroscopy lines is negligible. In this scenario, atoms and molecules are in a well-defined rovibrational state and in a specific translational state that can be further tuned. Therefore, ultracold systems are a perfect arena for developing high-precision spectroscopic tools. Indeed, ultracold physics has played a major role in the evolution of high-precision spectroscopy to levels hardly imaginable at the beginning of the twenty-first century.
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Pérez Ríos, J. (2020). Ultracold Physics and the Quest of New Physics. In: An Introduction to Cold and Ultracold Chemistry. Springer, Cham. https://doi.org/10.1007/978-3-030-55936-6_12
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DOI: https://doi.org/10.1007/978-3-030-55936-6_12
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