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Few-Neutron Systems with the Long-Range Casimir-Polder Force

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Abstract

In this work, we present results of the long-range electromagnetic Casimir-Polder interactions between two neutrons, a neutron and a conducting wall, and a neutron between two walls. As input, we use the dynamic dipole polarizabilities of the neutron fitted to chiral EFT results up to the pion production threshold and at the onset of the Delta resonance. Our work can be relevant to the physics of confined ultracold neutrons inside bottles.

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Funding

Work supported in part by the Brazilian agency FAPESP thematic projects 2017/05660-0 and 2019/07767-1, and INCT-FNA Proc. No. 464898/2014-5 (RH), and the US NSF through a grant for ITAMP at Harvard University and the Smithsonian Astrophysical Observatory (JFB).

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  1. Instituto de Física, Universidade de São Paulo, R. do Matão 1371, 05508-090, São Paulo, Brazil

    R. Higa

  2. ITAMP, Center for Astrophysics, Harvard & Smithsonian, MS 14, 60 Garden St., Cambridge, MA, 02138, USA

    J. F. Babb

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  1. R. Higa
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Correspondence to R. Higa.

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Higa, R., Babb, J.F. Few-Neutron Systems with the Long-Range Casimir-Polder Force. Braz J Phys 51, 231–237 (2021). https://doi.org/10.1007/s13538-020-00849-5

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