• S Bhattacharyya

      Articles written in Pramana – Journal of Physics

    • On the calculation of second order properties: An equation of motion approach

      M Gupta S Bhattacharyya

      More Details Abstract Fulltext PDF

      In the light of the equation of motion method a general expression for polarisability calculation has been derived. From this general expression, different approximation methods can be deduced for different choices of ground state and excitation manifold. Among these the coupled Hartree-Fock theory is the most extensively used one for polarisability calculations. It has also been shown that this theory has a simple relationship with random phase approximation.

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