Frankfurt 2006 – wissenschaftliches Programm

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A: Atomphysik

A 1: Pr
äzisionsspektroskopie I

A 1.1: Vortrag

Montag, 13. März 2006, 10:40–10:55, H6

Hydrogen Spectrum and Quantum Electrodynamics — •Ulrich D. Jentschura — Max–Planck–Institut für Kernphysik, Heidelberg

The quantum electrodynamic (QED) theory of hydrogen and deuterium has advanced over the past 10 years and has recently been combined with a generalized least-squares analysis [1], in order to allow for optimal predictions of transition frequencies, besides the determination of the 2002 CODATA values of the Rydberg constant, which is the most accurate physical constant, and the proton and deuteron charge radii. Some of the predicted transition frequencies have relative uncertainties smaller than that of the g-factor of the electron, which was previously the most accurate prediction of QED. Further advances in theory [2] will pave the way for improvements of fundamental constants, anticipating the results of frequency measurements currently in progress in Garching and Paris.

[1] U. D. Jentschura, S. Kotochigova, E.-O. Le Bigot, P. J. Mohr and B. N. Taylor, Phys. Rev. Lett. 95, 163003 (2005).

[2] A. Czarnecki, U. D. Jentschura and K. Pachucki, Phys. Rev. Lett. 95, 180404 (2005).