| Autor: |
Cadoret, Malo, De Mirandes, Estefania, Cladé, Pierre, Schwob, Catherine, Nez, François, Julien, Lucile, Biraben, François, Guellati-Khélifa, Saïda |
| Rok vydání: |
2008 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1142/9789814273008_0007 |
| Popis: |
We use Bloch oscillations to transfer coherently many photon momenta to atoms. Then we can measure accurately the recoil velocity $\hbar k/m$ and deduce the fine structure constant $\alpha$. The velocity variation due to Bloch oscillations is measured using atom interferometry. This method yields to a value of the fine structure constant $\alpha^{-1}= 137.035 999 45 (62)$ with a relative uncertainty of about $4.5 \times 10^{-9}$. |
| Databáze: |
arXiv |
| Externí odkaz: |
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