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Special thanks to Chuankun Zhang, Tian Ooi, Jacob S. Higgins, and Jack F. Doyle from Prof. Jun Ye’s lab at JILA/NIST/University of Colorado, as well as Prof. Victor Flambaum from UNSW’s Department of Theoretical Physics, for their valuable assistance and consultation on this video.
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Creator – Jade Tan-Holmes
Script – Daniel Inafuku
Animations – Hamed Akrami
Music – epidemicsound.com
Sources and further reading
Main paper on nuclear clock: https://www.nature.com/articles/s41586-024-07839-6 (arxiv version: https://arxiv.org/abs/2406.18719)
2nd Th-229 laser experiment: https://arxiv.org/abs/2404.12311
Fine structure constant nuclear sensitivity: https://arxiv.org/abs/2407.17300
Temporal variation of fine structure constant: https://arxiv.org/pdf/physics/0402132
Some popular articles on the nuclear clock discovery
The First Nuclear Clock Will Test if Fundamental Constants Change
Dirac’s 1938 paper (A new basis of cosmology): https://royalsocietypublishing.org/doi/10.1098/rspa.1938.0053
Discussion of Dirac’s work: https://academic.oup.com/astrogeo/article-abstract/39/6/6.19/203469?redirectedFrom=PDF&login=false
Chapters
0:00-1:21 A breakthrough in physics
1:21- 2:38 What are fundamental constants?
2:38-10:16 The constants might not be constant
10:16 -15:10 What is an atomic clock?
15:10 The nuclear clock
