Electron correlation and higher-order relativistic effects are probed in the evaluation of scalar and tensor static electric dipole (E1) polarizabilities $\left({\alpha }_d\right)$ of several even- and odd-parity states in cesium (Cs) using the Dirac-Hartree-Fock (DHF) method, second-order perturbation theory [MBPT(2)], third-order perturbation theory [MBPT(3)], random phase approximation (RPA), and singles and doubles approximated relativistic coupled-cluster (RCCSD) method. To account for perturbation due to an odd-parity E1 operator on the atomic orbitals, calculations are carried out in the linear response approach. Our final ${\alpha }_d$ values, with the estimated uncertainties, show reasonably good agreement with the previous calculations and available experimental results. Differences among the DHF, MBPT(2), MBPT(3) and RPA results indicate that pair-correlation (PC) effects play major roles compared to the core-polarization (CP) effects in the determination of ${\alpha }_d$ values in Cs. From the differences among the MBPT(3) and RCC results, we find correlations among the PC and CP effects and double CP effects together are also significant in these calculations. Contributions from the Breit interactions are found to be quite large in the high-lying states.

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• Stark effect
• Atoms
• Polarizability
• Coupled cluster
• First-principles calculations
• Hartree-Fock methods
• Perturbative methods
• Random phase approximation