Titre :

Towards Probing a Variation of Fundamental Constants with Optical Clock Transitions of 127I2

Auteur(s) :

Constantin, Florin Lucian [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]

Titre de la manifestation scientifique :

2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)

Ville :

Keystone

Pays :

Etats-Unis d'Amérique

Date de début de la manifestation scientifique :

2020-07-19

Titre de l’ouvrage :

Proc. IFCS-ISAF 2020

Éditeur :

IEEE

Mot(s)-clé(s) en anglais :

Laser Spectroscopy
Clocks
Rovibronic States
Fundamental Constants

Discipline(s) HAL :

Physique [physics]/Physique Quantique [quant-ph]
Physique [physics]/Physique [physics]/Optique [physics.optics]

Résumé en anglais : [en]

Precision measurements of the molecular iodine optical transitions can be exploited for constraining a possible time variation of the fundamental constants. The sensitivities of the molecular frequencies to a variation of ...
Lire la suite >Precision measurements of the molecular iodine optical transitions can be exploited for constraining a possible time variation of the fundamental constants. The sensitivities of the molecular frequencies to a variation of the proton-toelectron mass ratio and of the fine structure constant are calculated. Compact molecular iodine clocks, designed for space applications with improved stability performances, enable fractional frequency reproducibility at the 10^(-15) level. The comparison of the optical iodine clocks based on transitions at 532 nm, 514 nm and 502 nm with the Cs frequency standard can constrain a fractional time variation of the proton-to-electron mass ratio and of the fine structure constant at the 10^(-14) yr-1 level.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL