Thermal corrections of lowest order for a helium atom

Abstract

In this paper the new type of thermal corrections for the helium and helium-like atomic systems are introduced. These are thermal one-photon exchange between the bound electrons and nucleus as well as between the bound electrons induced by the blackbody radiation (BBR). All the derivations are given within the rigorous QED theory. It is shown that these thermal corrections are the same order in powers of $\alpha$ (fine structure constant) as the well-known BBR-induced Stark shift but the different behaviour in temperature. The numerical results presented in this paper make possible to expect their significance for modern experiments and testing the fundamental interactions in helium.

arXiv comment5 pages, 2 figures, 3 tables

References in corpus (10)

• Multipolar theory of black-body radiation shift of atomic energy levels and its implications for optical lattice clocks
• Frequency metrology in quantum degenerate helium: Direct measurement of the 2 3S1 - 2 1S0 transition
• Precision calculation of blackbody radiation shifts for optical frequency metrology
• Frequency metrology of helium around 1083 nm and determination of the nuclear charge radius
• Testing fundamental interactions on the helium atom
• Higher-order recoil corrections for triplet states of the helium atom
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• Thermal QED theory for bound states
• BBR-induced Stark shifts and level broadening in helium atom

Cited by in corpus (5)

• Relativistic corrections to the thermal interaction of bound particles
• Thermal corrections to the bound-electron $g$-factor
• Thermal radiative corrections to hyperfine structure of light hydrogen-like systems
• Vertex-type thermal correction to the one-photon transition rates
• Thermal corrections for positronium