Measurement of the ratio h/mRb and determination of the fine structure constant

Malo Cadoret (1) , Estefania de Mirandes (1) , Pierre Cladé (1) , Saïda Guellati-Khélifa (1) , François Nez (1) , François Biraben (1)

1 LKB (Jussieu) - Laboratoire Kastler Brossel

We present a review of the most precise determinations of the fine structure constant α which are obtained in different domains of physics. We describe the measurement of the ratio h/mRb between the Planck constant and the mass of Rubidium atom which leads to a precise value of α which is very few dependent of the QED. Finally, we present a review of the different determinations of the von Klitzing constant RK.

Mots clés: Fine structure constant; quantum Hall effect

Domaines: Physique Atomique [physics.atom-ph]

Malo Cadoret, Estefania de Mirandes, Pierre Cladé, Saïda Guellati-Khélifa, François Nez, et al.. Measurement of the ratio h/mRb and determination of the fine structure constant. Comptes Rendus. Physique, 2011, 12, pp.379. ⟨10.1016/j.crhy.2011.02.002⟩. ⟨hal-00697765⟩