Relativistic coupled-cluster studies of dipole polarizabilities in closed-shell atoms

dc.contributor.author	Sahoo, B. K
dc.contributor.author	Das, B. P
dc.date.accessioned	2008-09-22T15:35:01Z
dc.date.available	2008-09-22T15:35:01Z
dc.date.issued	2008-06
dc.identifier.citation	Physical Review A, Vol. 77, No. 6, pp. 062516	en
dc.identifier.issn	1050-2947
dc.identifier.uri	http://hdl.handle.net/2248/3775
dc.description.abstract	We investigate the role of electron correlation effects in the electric-dipole polarizabilities of the ground states of the alkaline earth metals, helium, and ytterbium by employing the relativistic coupled-cluster (RCC) theory. These effects are incorporated via the residual Coulomb interaction to all orders in the RCC singles and doubles approximations. The perturbed wave functions used in the calculations of the polarizabilities are obtained by directly solving the first-order perturbed RCC equations, thereby avoiding the sum-over-states approach. Our results are compared with other calculations and available experimental data.	en
dc.language.iso	en	en
dc.publisher	The American Physical Society	en
dc.relation.uri	http://link.aps.org/abstract/PRA/v77/e062516	en
dc.rights	© The American Physical Society
dc.subject	Electron Correlation Effects	en
dc.subject	Electric-Dipole Polarizabilities	en
dc.subject	Alkaline Earth Metals	en
dc.subject	Relativistic Coupled-Cluster (RCC) Theory	en
dc.title	Relativistic coupled-cluster studies of dipole polarizabilities in closed-shell atoms	en
dc.type	Article	en