Perturbation theory of the electron correlation effects for atomic and molecular properties. V. Quadrupole polarizability of Ne

The static quadrupole polarizability of Ne is calculated through the use of the many-body perturbation-theory scheme limited to single and double substitutions in the reference Hartree-Fock (HF) determinant (SD-MBPT). All calculations are performed within the finite-field numerical perturbation scheme. The fourth-order MBPT treatment based on the coupled HF solution for the perturbed system leads to the quadrupole polarizability value equal to 7.48 a.u. The convergence of the SD-MBPT series for properties and the role of the renormalization terms are discussed.