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Perspectives on Few-Body Cluster Structures in Exotic Nuclei

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Abstract

It is a fascinating phenomenon in nuclear physics that states with a pronounced few-body structure can emerge from the complex dynamics of many nucleons. Such halo or cluster states often appear near the boundaries of nuclear stability. As such, they are an important part of the experimental program beginning at the Facility for Rare Isotope Beams (FRIB). A concerted effort of theory and experiment is necessary both to analyze experiments involving effective few-body states, as well as to constrain and refine theories of the nuclear force in light of new data from these experiments. As a contribution to exactly this effort, this paper compiles a collection of “perspectives” that emerged out of the Topical Program “Few-body cluster structures in exotic nuclei and their role in FRIB experiments” that was held at FRIB in August 2022 and brought together theorists and experimentalists working on this topic.

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Notes

  1. The EC method was recently recognized as one of the reduced basis methods (RBM) developed in the field of model order reduction [294, 295].

  2. There is additionally a dependence on the mass ratio between the halo constituents and the core, but its influence is rather weak.

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Acknowledgements

This work is supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under the FRIB Theory Alliance award no. DE-SC0013617. This work is supported by the National Science Foundation under Grant Nos. PHY-1555030, PHY-2111426, PHY-1913728, PHY-2209060, PHY-2044632, PHY-1912350, OAC-2004601 and the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Contract Nos. DE-AC52-07NA27344, DE-AC05-00OR22725, DE-SC0021422, DE-AC02-06CH1135, DE-FG02-93ER40756, DE-SC0020451, and DE-AC05-06OR23177. GP’s work is supported by the LLNL-LDRD Program under Project No. 21-ERD-006. KSB greatly appreciates the financial support of a research fellowship from the Louisiana Board of Regents; it benefited from computing resources provided by the National Energy Research Scientific Computing Center NERSC (under Contract No. DE-AC02-05CH11231), Frontera computing project at the Texas Advanced Computing Center (under National Science Foundation award OAC-1818253) and LSU (www.hpc.lsu.edu). FB’s work is supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through Project-ID 279384907 - SFB 1245. FB would like to acknowledge Sonia Bacca for useful discussions. TF’s work is partially supported by Fundação de Amparo à Pesquisa do Estado de São Paulo (2017/05660-0, 2019/07767-1), Conselho Nacional de Desenvolvimento Científico e Tecnológico (308486/2015-3) and the INCT-FNA project No. 464898/2014-5.

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Authors and Affiliations

  1. Facility for Rare Isotope Beams, East Lansing, 48824, MI, USA

    Daniel Bazin, Kévin Fossez, Chloë Hebborn, Filomena Nunes & Xilin Zhang

  2. Department of Physics and Astronomy, Michigan State University, East Lansing, 48824, MI, USA

    Daniel Bazin & Filomena Nunes

  3. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, 70803, LA, USA

    Kevin Becker

  4. Institut für Kernphysik and PRISMA+ Cluster of Excellence, Johannes Gutenberg-Universität, 55128, Mainz, Germany

    Francesca Bonaiti

  5. Institute of Nuclear and Particle Physics, and Department of Physics and Astronomy, Ohio University, Athens, OH, 45701, USA

    Charlotte Elster

  6. Florida State University, Tallahassee, 32306, FL, USA

    Kévin Fossez

  7. Physics Division, Argonne National Laboratory, Lemont, 60439, IL, USA

    Kévin Fossez & Benjamin Kay

  8. Instituto Tecnológico de Aeronáutica, DCTA, 12228-900, São José dos Campos, Brazil

    Tobias Frederico

  9. Theory Center, Jefferson Lab, Newport News, 23606, VA, USA

    Alex Gnech

  10. Lawrence Livermore National Laboratory, P.O. Box 808, L-414, Livermore, 94551, CA, USA

    Chloë Hebborn, Linda Hlophe, Konstantinos Kravvaris & Gregory Potel

  11. Department of Physics and Astronomy, Purdue University, West Lafayette, 47906, IN, USA

    Michael Higgins

  12. Department of Physics, North Carolina State University, Raleigh, 27695, NC, USA

    Sebastian König

  13. Department of Physics, Federal Fluminense University, Niterói, 24210-340, R.J., Brazil

    Jesus Lubian

  14. Physics Division, Oak Ridge National Laboratory, Oak Ridge, 37831, TN, USA

    Augusto Macchiavelli & Lucas Platter

  15. Department of Physics and Astronomy, University of Tennessee, Knoxville, Knoxville, 37996, TN, USA

    Lucas Platter

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Bazin, D., Becker, K., Bonaiti, F. et al. Perspectives on Few-Body Cluster Structures in Exotic Nuclei. Few-Body Syst 64, 25 (2023). https://doi.org/10.1007/s00601-023-01794-0

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