Electric dipole polarizability of group-IIIA ions using PRCC: Large correlation effects from nonlinear terms
Ravi Kumar,
S. Chattopadhyay,
B. K. Mani
et al.
Abstract:We compute the ground-state electric dipole polarizability of group-IIIA ions using the perturbed relativistic coupled-cluster (PRCC) theory. To account for the relativistic effects and QED corrections, we use the Dirac-Coulomb-Breit Hamiltonian with the corrections from the Uehling potential and the self-energy. The effects of triple excitations are considered perturbatively in the PRCC. Our PRCC results for α are good in agreement with the previous theoretical results for all the ions. From our computations … Show more
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