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PreprintarXiv licencearXiv

Percent-Level Prediction of the Deuteron Magnetic Polarizability

  • Rishi Cherukuri
  • Jiunn-Wei Chen
  • Xiangdong Ji
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Abstract

Working through next-to-next-to-leading order (NNLO) accuracy in pionless effective field theory, we compute the isovector magnetic-dipole contribution to the scalar deuteron magnetic polarizability. The polarizability follows from detailed balance and a dispersion integral with the two magnetic current counter-terms fixed by the thermal np→ dγ rate. The conventional ρ and Z expansion schemes differ by 12.3% at next-to-leading order but agree to 0.165% at NNLO, resulting an apparent scheme dependence and supplying an independent convergence diagnostic. We obtain βM0(M1v)=0.0789±0.0010 fm3, a 1.3% uncertainty, compared with 4.9% previously.

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Cite

BibTeXRIS
BibTeX
@misc{cherukuri2026percentlevel,
  title = {{Percent-Level Prediction of the Deuteron Magnetic Polarizability}},
  author = {Rishi Cherukuri and Jiunn-Wei Chen and Xiangdong Ji},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.04615},
  eprint = {2609.04615},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.04615},
}
RIS
TY  - UNPB
TI  - Percent-Level Prediction of the Deuteron Magnetic Polarizability
AU  - Rishi Cherukuri
AU  - Jiunn-Wei Chen
AU  - Xiangdong Ji
PY  - 2026
DA  - 2026/09/04
PB  - arXiv
DO  - 10.48550/arxiv.2609.04615
UR  - https://arxiv.org/abs/2609.04615
AB  - Working through next-to-next-to-leading order (NNLO) accuracy in pionless effective field theory, we compute the isovector magnetic-dipole contribution to the scalar deuteron magnetic polarizability. The polarizability follows from detailed balance and a dispersion integral with the two magnetic current counter-terms fixed by the thermal np→ dγ rate. The conventional ρ and Z expansion schemes differ by 12.3% at next-to-leading order but agree to 0.165% at NNLO, resulting an apparent scheme dependence and supplying an independent convergence diagnostic. We obtain β_M0^(M1_v)=0.0789±0.0010 fm^3, a 1.3% uncertainty, compared with 4.9% previously.
ER  -