Roadmap towards the redefinition of the second
Abstract
This paper outlines the roadmap towards the redefinition of the second, which was recently updated by the CCTF Task Force created by the CCTF in 2020. The main achievements and the open challenges related to the status of the optical frequency standards, their contribution to time scales and UTC, the possibility of their comparison and the knowledge of the Earth's gravitational potential at the necessary level of uncertainty are discussed. In addition, the mandatory criteria to be achieved before redefinition and their current fulfilment level, together with the redefinition options based on a single or on a set of transitions are described.
Cite
@article{arxiv.2307.14141,
title = {Roadmap towards the redefinition of the second},
author = {N. Dimarcq and M. Gertsvolf and G. Mileti and S. Bize and C. W. Oates and E. Peik and D. Calonico and T. Ido and P. Tavella and F. Meynadier and G. Petit and G. Panfilo and J. Bartholomew and P. Defraigne and E. A. Donley and P. O. Hedekvist and I. Sesia and M. Wouters and P. Dube and F. Fang and F. Levi and J. Lodewyck and H. S. Margolis and D. Newell and S. Slyusarev and S. Weyers and J. -P. Uzan and M. Yasuda and D. -H. Yu and C. Rieck and H. Schnatz and Y. Hanado and M. Fujieda and P. -E. Pottie and J. Hanssen and A. Malimon and N. Ashby},
journal= {arXiv preprint arXiv:2307.14141},
year = {2024}
}
Comments
26 pages. This paper is based on the work of a CCTF Task Force on the roadmap to the redefinition of the second