JOURNAL ARTICLE

Transportable optical lattice clocks and general relativity.

  • Published In: International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology, 2025, v. 34, n. 3. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Shinkai, Hisaaki; Takamoto, Masao; Katori, Hidetoshi 3 of 3

Abstract

Optical lattice clocks (OLCs) enable us to measure time and frequency with a fractional uncertainty at 1 0 − 1 8 level, which is 2 orders of magnitude better than Cs clocks. In this paper, after briefly reviewing OLCs and the history of testing the fundamental principles of general relativity, we report our experiments of measuring the gravitational redshift between RIKEN and The University of Tokyo, and at Tokyo Skytree using transportable OLCs. We also discuss a couple of future applications of OLCs such as detecting gravitational waves in space and relativistic geodesy. The possibility of testing second-order parametrized post-Newtonian potential around the Earth is also mentioned. [ABSTRACT FROM AUTHOR]

Additional Information

  • Source:International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology. 2025/02, Vol. 34, Issue 3, p1
  • Document Type:Article
  • Subject Area:Physics
  • Publication Date:2025
  • ISSN:0218-2718
  • DOI:10.1142/S0218271825400127
  • Accession Number:184007020
  • Copyright Statement:Copyright of International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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