Theoretical Atomic Physics

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This expanded and updated textbook offers an advanced presentation of quantum mechanics tailored for modern atomic physics. It covers contemporary topics such as semiclassical theory, chaos, atom optics, and Bose-Einstein condensation in atomic gases. To aid in material consolidation, various problems are included along with complete solutions. The focus on theory allows readers to understand the fundamental assumptions behind standard theoretical constructs and encourages independent research. The fourth edition features an updated treatment of scattering theory and near-threshold phenomena related to cold atoms and molecules. It emphasizes the quantization of weakly bound states just below the continuum threshold, as well as low-energy scattering and quantum reflection above it. The book highlights the differences between long-ranged Coulombic potentials and shorter-ranged potentials that decrease faster than 1/r² at large distances. New sections on tunable near-threshold Feshbach resonances and scattering in two spatial dimensions address issues pertinent to ongoing and future research in cold and ultra-cold atoms. This resource serves as a valuable reference for graduate students and researchers alike.