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

B. K. Sahoo; B. P. Das

doi:10.1103/physreva.77.062516

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

B. K. Sahoo^*, B. P. Das

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

52 Citations (Scopus)

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.

Original language	English
Article number	062516
Number of pages	5
Journal	Physical Review A
Volume	77
Issue number	6
DOIs	https://doi.org/10.1103/physreva.77.062516
Publication status	Published - Jun-2008

Keywords

FREQUENCY-DEPENDENT POLARIZABILITIES
LOW-LYING LEVELS
YTTERBIUM
BARIUM
6S(2)

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title = "Relativistic coupled-cluster studies of dipole polarizabilities in closed-shell atoms",

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.",

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year = "2008",

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AU - Sahoo, B. K.

AU - Das, B. P.

PY - 2008/6

Y1 - 2008/6

N2 - 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.

AB - 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.

KW - FREQUENCY-DEPENDENT POLARIZABILITIES

KW - LOW-LYING LEVELS

KW - YTTERBIUM

KW - BARIUM

KW - 6S(2)

U2 - 10.1103/physreva.77.062516

DO - 10.1103/physreva.77.062516

M3 - Article

VL - 77

JO - Physical Review A

JF - Physical Review A

IS - 6

M1 - 062516

ER -

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

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Keywords

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