ar X iv : p hy si cs / 0 60 62 49 v 1 2 8 Ju n 20 06 Frequency shift of cesium clock transition due to blackbody radiation
نویسنده
چکیده
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 (δν/E = −2.26(2) × 10Hz/(V/m)) 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 (∼ 10%) between ab initio and semiempirical calculations is due to the contribution of the continuum spectrum to the sum over intermediate states.
منابع مشابه
ar X iv : p hy si cs / 0 60 51 63 v 3 6 J ul 2 00 6 Frequency shift of hyperfine transitions due to blackbody radiation
We have performed calculations of the size of the frequency shift induced by a static electric field on the clock transition frequencies of the hyperfine splitting in Yb, Rb, Cs, Ba, and Hg. The calculations are used to find the frequency shifts due to blackbody radiation which are needed for accurate frequency measurements and improvements of the limits on variation of the fine structure const...
متن کاملar X iv : 0 90 6 . 12 19 v 2 [ ph ys ic s . at om - p h ] 2 5 Ju l 2 00 9 Spin - 1 / 2 Optical Lattice Clock
We experimentally investigate an optical clock based on Yb (I = 1/2) atoms confined in an optical lattice. We have evaluated all known frequency shifts to the clock transition, including a densitydependent collision shift, with a fractional uncertainty of 3.4 × 10, limited principally by uncertainty in the blackbody radiation Stark shift. We measured the absolute clock transition frequency rela...
متن کاملar X iv : p hy si cs / 0 60 62 46 v 1 2 8 Ju n 20 06 Kolmogorov scaling in impassioned van Gogh paintings
We show that some impassioned van Gogh paintings display scaling properties similar to the observed in turbulent fluids, suggesting that these paintings reflect the fingerprint of turbulence with such a realism that is even consistent with the way that a mathematical model characterizes this phenomenon. Specifically, we show that the probability distribution function (PDF) of luminance fluctuat...
متن کاملar X iv : p hy si cs / 0 60 62 30 v 1 2 6 Ju n 20 06 Enhanced Molecular Orientation Induced by Molecular Anti - Alignment
We explore the role of laser induced anti-alignment in enhancing molecular orientation. A field-free enhanced orientation via anti-alignment scheme is presented, which combines a linearly polarized femtosecond laser pulse with a half-cycle pulse. The laser pulse induces transient anti-alignment in the plane orthogonal to the field polarization, while the half-cycle pulse leads to the orientatio...
متن کاملar X iv : p hy si cs / 0 60 10 79 v 1 1 1 Ja n 20 06 Comparison of 87 Rb N - resonances for D 1 and D 2 transitions
We report an experimental comparison of three-photon-absorption resonances (known as “N resonances”) for the D1 and D2 optical transitions of thermal Rb vapor. We find that the D2 N -resonance has better contrast, a broader linewidth, and a more symmetric lineshape than the D1 N -resonance. Taken together, these factors imply superior performance for frequency standards operating on alkali D2 N...
متن کامل