Nonrelativistic quantum electrodynamic approach to polarizabilities of light atoms
Xuesong Mei, Wanping Zhou, Haoxue Qiao
TL;DR
This paper introduces a quantum electrodynamics framework for calculating polarizabilities of light atoms, incorporating relativistic and radiative corrections, and clarifies the role of Coulomb-transverse-photon contributions.
Contribution
It develops a field-quantization scheme based on long-wavelength QED and the Power-Zienau transformation for precise polarizability calculations of light atoms.
Findings
External electromagnetic field effects are derived within the scheme.
Coulomb-transverse-photon contributions are shown to be zero due to parity symmetry.
The approach includes relativistic and radiative corrections to polarizabilities.
Abstract
We develop a field-quantization scheme for calculating quantum electrodynamic effects on polarizabilities of light atomic systems. This scheme is based on the theory of long-wavelength quantum electrodynamics of Pachucki [Phys. Rev. A \textbf{69}, 052502 (2004)], which combines the theory of nonrelativistic quantum electrodynamics with the Power-Zienau transformation. The external electromagnetic field effects, including electric and magnetic multipole polarizabilities and their relativistic and radiative corrections, are derived using this scheme. The Coulomb-transverse-photon contributions are shown to be zero due to parity symmetry.
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