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arXiv · 1807.08662

Second-order Stark effect and polarizability of a relativistic two-dimensional hydrogen-like atom in the ground state

Radosław Szmytkowski
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Abstract

The second-order Stark effect for a planar Dirac one-electron atom in the ground state is analyzed within the framework of the Rayleigh-Schr\"odinger perturbation theory, with the use of the Sturmian series expansion of the generalized Dirac-Coulomb Green function. A closed-form analytical expression for the static dipole polarizability of that system is found. The formula involves a generalized hypergeometric function ${}_{3}F_{2}$ with the unit argument. Numerical values of the polarizabilities for relativistic planar hydrogenic atoms with atomic numbers $1\leqslant Z\leqslant68$ are provided in a tabular form. A simple formula for the polarizability of a nonrelativistic two-dimensional hydrogenic atom, reported previously by several other authors, is recovered from our result in the nonrelativistic limit.

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Radosław Szmytkowski. 2018-07-23. Second-order Stark effect and polarizability of a relativistic two-dimensional hydrogen-like atom in the ground state. https://doi.org/10.1103/physreva.98.042507

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