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dc.contributor.authorWansbeek, L. W-
dc.contributor.authorSahoo, B. K-
dc.contributor.authorTimmermans, R. G. E-
dc.contributor.authorDas, B. P-
dc.contributor.authorMukherjee, D-
dc.identifier.citationPhysical Review A, Vol. 78, No. 1, pp. 012515en
dc.description.abstractWe report on a technique to determine the van der Waals coefficients of lithium (Li) atoms based on relativistic coupled-cluster theory. These quantities are determined using the imaginary parts of the scalar dipole and quadrupole polarizabilities, which are evaluated using an approach that we have proposed earlier [B. K. Sahoo, Chem. Phys. Lett. 448, 144 (2007)]. Our procedure is fully ab initio, and avoids the sum-over-the-states approach. We present the dipole and quadrupole polarizabilities of many of the low-lying excited states of Li. Also, the off-diagonal dipole and quadrupole polarizabilites between some of the low-lying states of Li have been calculated.en
dc.publisherThe American Physical Societyen
dc.rights© The American Physical Society-
dc.subjectVan Der Waals Coefficients Of Lithiumen
dc.subjectRelativistic Coupled-Cluster Theoryen
dc.subjectScalar Dipoleen
dc.subjectQuadrupole Polarizabilitiesen
dc.subjectOff-Diagonal Dipoleen
dc.titleAb initio determination of polarizabilities and van der Waals coefficients of Li atoms using the relativistic coupled-cluster methoden
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