Abstract
Halo nuclei are characterized by a few weakly bound halo nucleons and a more tightly bound core. This separation of scales can be exploited in a few-body description of halo nuclei, since the detailed structure of the core is not resolved by the halo nucleons. We present an introduction to the effective (field) theory for low-energy properties of halo nuclei. The focus is on halos with S-wave interactions for which universal properties are most pronounced. The special role of the unitary limit is illustrated using the example of multi-neutron systems and the Efimov effect as a universal binding mechanism for halo nuclei. Connections to ultracold atoms and hadron physics are highlighted, and extensions to higher partial waves, Coulomb forces, and nuclear reactions are briefly touched upon.
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Acknowledgements
We thank Chen Ji and Daniel R. Phillips for a fruitful collaboration that led to this chapter and Chen Ji for comments on the manuscript. This work was supported in part by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Projektnummer 279384907 – SFB 1245 and by the German Federal Ministry of Education and Research (BMBF) (Grant No. 05P21RDFNB).
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Hammer, H.W. (2023). Theory of Halo Nuclei. In: Tanihata, I., Toki, H., Kajino, T. (eds) Handbook of Nuclear Physics . Springer, Singapore. https://doi.org/10.1007/978-981-19-6345-2_64
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DOI: https://doi.org/10.1007/978-981-19-6345-2_64
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