High-precision study of Cs polarizabilities

TL;DR

This paper presents high-precision first-principles calculations of cesium atom polarizabilities across various states, providing a theoretical benchmark and comparing with existing data.

Contribution

First-principles relativistic all-order calculations of Cs polarizabilities for multiple states, including uncertainty estimates and comprehensive review.

Findings

Calculated polarizabilities for Cs states N=6-12, Np_j=6-10, Nd_j=5-10.

Provided uncertainties and compared with existing theoretical and experimental data.

Established a benchmark for future studies of Cs polarizabilities.

Abstract

We present results of the first-principles calculation of Cs dipole static polarizabilities for the Ns (N = 6 - 12), Np_j (N = 6 - 10), and Nd_j (N = 5 - 10) states using the relativistic all-order method. In our implementation of the all-order method, single and double excitations of Dirac-Fock wave functions are included to all orders in perturbation theory. Additional calculations are carried out for the dominant terms and the uncertainties of our final values are estimated for all states. A comprehensive review of the existing theoretical and experimental studies of the Cs polarizabilities is also carried out. Our results are compared with other values where they are available. These calculations provide a theoretical benchmark for a large number of Cs polarizabilities.