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Torsion and Nonmetricity Constraints From Neutron Spin Rotation in Polarized Matter — arXiv:2608.28832

Source: arXiv (en)
Original: https://arxiv.org/abs/2608.28832
License (as archived): CC0-1.0
Archived: 2026-10-17T10:33:45.690Z
SHA-256 of the archived text: e3d4920ac2f2f9cf7d4092e85c272f85c48992bb0d6e18d9cf6ec738053161ec
Stable URL of this page: https://metraipolis.com/documento/dc_eb22b44f10dc

How to cite

Torsion and Nonmetricity Constraints From Neutron Spin Rotation in Polarized Matter — arXiv:2608.28832 — arXiv (en), https://arxiv.org/abs/2608.28832 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_eb22b44f10dc (Metraipolis archive dc_eb22b44f10dc, sha256 e3d4920ac2f2f9cf7d4092e85c272f85c48992bb0d6e18d9cf6ec738053161ec)

BibTeX

@misc{dceb22b44f10dc,
  title = {Torsion and Nonmetricity Constraints From Neutron Spin Rotation in Polarized Matter — arXiv:2608.28832},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2608.28832},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_eb22b44f10dc; sha256 e3d4920ac2f2f9cf7d4092e85c272f85c48992bb0d6e18d9cf6ec738053161ec},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2608.28832. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Many modified-gravity frameworks employ non-Riemannian connection degrees of freedom, including torsion and nonmetricity. In Einstein-Cartan-type theories, torsion is associated with spin density, while more general metric-affine frameworks can be investigated through phenomenological searches for in-matter torsion and nonmetricity backgrounds. This work applies an effective field theory approach to characterize general couplings of electron and neutron operators to spacetime torsion and nonmetricity up to mass dimension six, predicting novel neutron-polarization signatures in the presence of an electron background. Neutron spin-rotation data from a polarized-electron ensemble inside a compensated ferrimagnet are used to constrain for the first time axially symmetric, direction-dependent in-matter torsion and nonmetricity combinations.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-09-01 in gr-qc).
Categorie arXiv: General Relativity and Quantum Cosmology (gr-qc) ; High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph); Nuclear Experiment (nucl-ex).
Pagina del lavoro: https://arxiv.org/abs/2608.28832 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-17T10:19:03.675Z dalla pagina https://arxiv.org/catchup/gr-qc/2026-09-01?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).