Perturbed Relativistic Coupled-Cluster Calculations of the Properties of Ar \(^{13+}\)

We have developed a perturbed relativistic coupled-cluster theory to study the parity nonconservation in atoms and ions. The method we have developed is quite robust and could be easily modified to compute other atomic properties just by changing the perturbation Hamiltonian. As benchmark test calculations, we have computed the electric dipole polarizability of ground and first excited state of Ar \(^{13+}\) . Further, as the clock transition property in Ar \(^{13+}\) , we have computed the M1 transition rate for \(2p_{1/2} \rightarrow 2p_{3/2}\) transition. Our calculated results for both the properties are in very good agreement with the previous theoretical and experimental results.