Browsing by Subject "Coupled-Cluster Theory"

Now showing items 1-4 of 4

Investigation of low-lying states of oxygen molecule via second-order multireference perturbation theory: a state-specific approach

Chattopadhyay, S; Mahapatra, U. S; Chaudhuri, R. K (American Chemical Society, 2009-05-21)

The relative performance of four variants of the Moller-Plesset (MP) partitioning (using different diagonal one-electron unperturbed Hamiltonian, H-0) based state-specific multireference perturbation theory (SS-MRPT) [termed ...
Many-body theory of electric dipole moments of atoms and its implications for the standard model of particle physics

Latha, K. V. P (Indian Institute of Astrophysics, 2007-09)
Random phase approximation for allowed and parity non-conserving electric dipole transition amplitudes and its connection with many-body perturbation theory and coupled-cluster theory

Gopakumar, G; Sur, C; Das, B. P; Chaudhuri, R. K; Mukherjee, D; Hirao, K (World Scientific Publishing Co, 2006)

The connections between the Random Phase Approximation (RPA) and Many-Body Perturbation Theory (MBPT) and its all order generalization, the Coupled-Cluster Theory (CCT), have been explored. Explicit expressions have been ...
Term values of Na-like iron group highly stripped ions using coupled-cluster theory

Ray, H (Institute of Physics, 2002-07)

More accurate term values, a few line strengths and transition probabilities for the E2 transitions of the iron group highly stripped ions Fe XVI, Co XVII and Ni XVIII are reported. We have used the fully relativistic ...

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