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  Magnetic dipole operator from chiral effective field theory for many-body expansion methods

Seutin, R., Hernandez, O. J., Miyagi, T., Bacca, S., Hebeler, K., König, S., et al. (2023). Magnetic dipole operator from chiral effective field theory for many-body expansion methods. Physical Review C, 108(5): 054005. doi:10.1103/PhysRevC.108.054005.

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 Creators:
Seutin, R.1, Author           
Hernandez, O. J., Author
Miyagi, T.1, Author                 
Bacca, S., Author
Hebeler, K.1, Author                 
König, S., Author
Schwenk, A.1, Author                 
Affiliations:
1Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548              

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Free keywords: Nuclear many-body theory, Effective field theory, Electroweak interactions in nuclear physics, Few-body systems, Nuclear structure & decays
 MPINP: Starke Wechselwirkung und exotische Kerne – Abteilung Blaum
 Abstract: Many-body approaches for atomic nuclei generally rely on a basis expansion of the nuclear states, interactions, and current operators. In this work, we derive the representation of the magnetic dipole operator in plane-wave and harmonic-oscillator basis states, as needed for Faddeev calculations of few-body systems or many-body calculations within, e.g., the no-core shell model, the in-medium similarity renormalization group, coupled-cluster theory, or the nuclear shell model. We focus in particular on the next-to-leading-order two-body contributions derived from chiral effective field theory. We provide detailed benchmarks and also comparisons with quantum Monte Carlo results for three-body systems. The derived operator matrix elements represent the basic input for studying magnetic properties of atomic nuclei based on chiral effective field theory.

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 Dates: 2023-11-27
 Publication Status: Published online
 Pages: 17
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevC.108.054005
 Degree: -

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Title: Physical Review C
  Other : Phys. Rev. C
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 108 (5) Sequence Number: 054005 Start / End Page: - Identifier: ISSN: 0556-2813
CoNE: https://pure.mpg.de/cone/journals/resource/954925225009