dorsal/arxiv
View SchemaA Search for Variations of Fundamental Constants using Atomic Fountain Clocks
| Authors | H. Marion, F. Pereira Dos Santos, M. Abgrall, S. Zhang, Y. Sortais, S. Bize, I. Maksimovic, D. Calonico, J. Gruenert, C. Mandache, P. Lemonde, G. Santarelli, Ph. Laurent, A. Clairon, C. Salomon |
|---|---|
| Categories | |
| ArXiv ID | physics/0212112 |
| URL | https://arxiv.org/abs/physics/0212112 |
| DOI | 10.1103/PhysRevLett.90.150801 |
| Journal | Phys.Rev.Lett. 90 (2003) 150801 |
Abstract
Over five years we have compared the hyperfine frequencies of 133Cs and 87Rb atoms in their electronic ground state using several laser cooled 133Cs and 87Rb atomic fountains with an accuracy of ~10^{-15}. These measurements set a stringent upper bound to a possible fractional time variation of the ratio between the two frequencies : (d/dt)ln(nu_Rb/nu_Cs)=(0.2 +/- 7.0)*10^{-16} yr^{-1} (1 sigma uncertainty). The same limit applies to a possible variation of the quantity (mu_Rb/mu_Cs)*alpha^{-0.44}, which involves the ratio of nuclear magnetic moments and the fine structure constant.
{
"annotation_id": "8f55d473-475b-4cf6-b26c-c38e4a5fcaed",
"date_created": "2026-03-02T18:00:42.677000Z",
"date_modified": "2026-03-02T18:00:42.677000Z",
"file_hash": "ddd2f38e82224f3176da14435c86c103586c52a785a278289131f6823a79f7e7",
"private": false,
"record": {
"abstract": "Over five years we have compared the hyperfine frequencies of 133Cs and 87Rb\natoms in their electronic ground state using several laser cooled 133Cs and\n87Rb atomic fountains with an accuracy of ~10^{-15}. These measurements set a\nstringent upper bound to a possible fractional time variation of the ratio\nbetween the two frequencies : (d/dt)ln(nu_Rb/nu_Cs)=(0.2 +/- 7.0)*10^{-16}\nyr^{-1} (1 sigma uncertainty). The same limit applies to a possible variation\nof the quantity (mu_Rb/mu_Cs)*alpha^{-0.44}, which involves the ratio of\nnuclear magnetic moments and the fine structure constant.",
"arxiv_id": "physics/0212112",
"authors": [
"H. Marion",
"F. Pereira Dos Santos",
"M. Abgrall",
"S. Zhang",
"Y. Sortais",
"S. Bize",
"I. Maksimovic",
"D. Calonico",
"J. Gruenert",
"C. Mandache",
"P. Lemonde",
"G. Santarelli",
"Ph. Laurent",
"A. Clairon",
"C. Salomon"
],
"categories": [
"physics.atom-ph",
"astro-ph",
"gr-qc",
"hep-ex",
"hep-ph"
],
"doi": "10.1103/PhysRevLett.90.150801",
"journal_ref": "Phys.Rev.Lett. 90 (2003) 150801",
"title": "A Search for Variations of Fundamental Constants using Atomic Fountain Clocks",
"url": "https://arxiv.org/abs/physics/0212112"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "3fb59c95-222d-467b-89bd-f97af66b3bba",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}