Antihydrogen is the simplest atom of pure antimatter. Measurements of a pair of ultraviolet spectral lines with laser spectroscopy provide stringent bounds on the magnitude by which a symmetry between matter and antimatter may be violated.
This is a preview of subscription content, access via your institution
Access options
Access Nature and 54 other Nature Portfolio journals
Get Nature+, our best-value online-access subscription
$32.99 / 30 days
cancel any time
Subscribe to this journal
Receive 12 print issues and online access
$259.00 per year
only $21.58 per issue
Rent or buy this article
Prices vary by article type
from$1.95
to$39.95
Prices may be subject to local taxes which are calculated during checkout
References
Baker, C. J. et al. Nat. Phys. https://doi.org/10.1038/s41567-024-02712-9 (2025).
Ahmadi, M. et al. Nature 548, 66–69 (2017).
Ahmadi, M. et al. Nature 557, 71–75 (2018).
Baker, C. J. et al. Nature 592, 35–42 (2021).
Fleurbaey, H. et al. Phys. Rev. Lett. 120, 183001 (2018).
Matveev, A. et al. Phys. Rev. Lett. 110, 230801 (2013).
Bullis, R. G. et al. Phys. Rev. Lett. 130, 203001 (2023).
Colladay, D. & Kostelecký, V. A. Phys. Rev. D 58, 116002 (1998).
Hori, M. et al. Nature 475, 484–488 (2011).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Competing interests
The author declares no competing interests.
Rights and permissions
About this article
Cite this article
Hori, M. Antihydrogen’s more than fine spectrum. Nat. Phys. 21, 179–180 (2025). https://doi.org/10.1038/s41567-024-02733-4
Published:
Version of record:
Issue date:
DOI: https://doi.org/10.1038/s41567-024-02733-4
