Frequency shift of cesium clock transition due to blackbody radiation

Details Frequency shift of cesium clock transition due to blackbody radiation Frequency shift of cesium clock transition due to blackbody radiation

2006-06-28

arxiv.org/abs/physics/0606249v1

Phys. Rev. Lett. 97, 040802 (2006)

Physics

Atomic Physics

Accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.97.040802

We have performed ab initio calculations of the frequency shift induced by a static electric field on the cesium clock hyperfine transition. The calculations are used to find the frequency shifts due to blackbody radiation. Our result ($\delta \nu/E^2=-2.26(2)\times 10^{-10}$Hz/(V/m)$^2$) is in good agreement with early measurements and ab initio calculations performed in other groups. We present arguments against recent claims that the actual value of the effect might be smaller. The difference ($\sim$ 10%) between ab initio and semiempirical calculations is due to the contribution of the continuum spectrum to the sum over intermediate states.

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