Radiative corrections to the polarizability of helium.

The complete alpha(3) QED correction to the helium atom polarizability is computed assuming an infinite nuclear mass and found to be equal to 0.000030666(3) a.u., with the contribution from the electric-field dependence of the Bethe logarithm amounting to 0.000000193(2) a.u. After including the alpha(2) and alpha(3) corrections for the nuclear recoil and the leading part of the alpha(4) QED correction, we find that the molar polarizability of 4He is 0.51725419(9)(4) cm(3)/mol. The first of the two error bounds is dominated by the uncertainty of alpha(4) and higher-order QED corrections and the second reflects the uncertainty of the Avogadro constant.

[1]  M. Moldover.  Can a Pressure Standard be Based on Capacitance Measurements? , 1998, Journal of research of the National Institute of Standards and Technology.

[2]  Optical properties of helium including relativistic corrections , 1998 .

[3]  Pachucki.  Improved result for helium 2(3)S1 ionization energy , 2000, Physical review letters.

[4]  A. Yelkhovsky,et al.  Ionization potential of the helium atom. , 2001, Physical review letters.

[5]  B. Jeziorski,et al.  Bethe logarithm and Lamb shift for the hydrogen molecular ion , 1992 .

[6]  L. Pendrill.  Macroscopic and microscopic polarizabilities of helium gas , 1996 .

[7]  K. Pachucki,et al.  Relativistic and QED corrections to the polarizability of helium , 2000 .

[8]  H. Araki.  Quantum-Electrodynamical Corrections to Energy-Levels of Helium , 1957 .

[9]  Relativistic configuration-interaction calculation of the polarizabilities of heliumlike ions. , 1996, Physical review. A, Atomic, molecular, and optical physics.

[10]  K. Szalewicz,et al.  Breit-Pauli and direct perturbation theory calculations of relativistic helium polarizability. , 2001, Physical review letters.

[11]  K. Pachucki,et al.  Recoil corrections to the Lamb shift in helium , 2000 .

[12]  Ericka Stricklin-Parker,et al.  Ann , 2005 .

[13]  C. Schwartz.  LAMB SHIFT IN THE HELIUM ATOM , 1961 .

[14]  R. C. Forrey,et al.  Computation of Bethe Logarithms and Other Matrix Elements of Analytic Functions of Operators , 1993 .

[15]  K. Szalewicz,et al.  Helium Dimer Interaction Energies from Gaussian Geminal and Orbital Calculations , 2004 .

[16]  J. Sucher.  Energy Levels of the Two-Electron Atom to Order α 3 ry; Ionization Energy of Helium , 1958 .

[17]  A. Yelkhovsky,et al.  Ionization Potential of the Helium AtomVladimir Korobov , 2001 .