Frequency Shift of the Cesium Clock Transition due to Blackbody Radiation

Journal Article · Fri Jul 28 00:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.040802· OSTI ID:20860560

Angstmann, E J; Dzuba, V A; Flambaum, V V ^[1]

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1. School of Physics, University of New South Wales, Sydney 2052 (Australia)

We perform 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{sup 2}=-2.26(2)x10{sup -10} Hz/(V/m){sup 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 ({approx}10%) between ab initio and semiempirical calculations is due to the contribution of the continuum spectrum in the sum over intermediate states.

• OSTI ID: 20860560
• Journal Information: Physical Review Letters, Vol. 97, Issue 4; Other Information: DOI: 10.1103/PhysRevLett.97.040802; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMIC CLOCKS
BLACKBODY RADIATION
CESIUM
ELECTRIC FIELDS
INTERMEDIATE STATE
TIME MEASUREMENT