Third-order perturbation theory for van der Waals interaction coefficients

Li-Yan Tang; Zong-Chao Yan; Ting-Yun Shi; James Mitroy

doi:10.1103/PhysRevA.84.052502

Third-order perturbation theory for van der Waals interaction coefficients

Li-Yan Tang, Zong-Chao Yan, Ting-Yun Shi, James Mitroy

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

5 Citations (Scopus)

Abstract

The third-order expression for the dispersion interaction between two atoms is written as a sum over lists of transition matrix elements. Particular attention is given to the C9/R9 interaction which occurs in the homonuclear case when one atom is in an S state and the other is in a P state. Numerical values of the C9 coefficient are given for the homonuclear alkali-metal dimers. The size of the C9:C3 dispersion coefficient ratio increases for the heavier alkali-metal atoms. The C11 and C13 coefficients between two helium atoms and lithium atoms in their ground states are also given.

Original language	English
Article number	052502
Pages (from-to)	1-9
Number of pages	9
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	84
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.84.052502
Publication status	Published - 4 Nov 2011

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10.1103/PhysRevA.84.052502

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title = "Third-order perturbation theory for van der Waals interaction coefficients",

abstract = "The third-order expression for the dispersion interaction between two atoms is written as a sum over lists of transition matrix elements. Particular attention is given to the C9/R9 interaction which occurs in the homonuclear case when one atom is in an S state and the other is in a P state. Numerical values of the C9 coefficient are given for the homonuclear alkali-metal dimers. The size of the C9:C3 dispersion coefficient ratio increases for the heavier alkali-metal atoms. The C11 and C13 coefficients between two helium atoms and lithium atoms in their ground states are also given.",

keywords = "Alkali metal atoms, Alkali-metal dimers, Dispersion coefficient, Dispersion interaction, Helium atom, Homonuclear, Lithium atoms, Numerical values, S state, Third-order, Third-order perturbation, Transition matrix elements, Van Der Waals interactions, Dispersions, Helium, Lithium, Perturbation techniques, Van der Waals forces, Atoms",

author = "Li-Yan Tang and Zong-Chao Yan and Ting-Yun Shi and James Mitroy",

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T1 - Third-order perturbation theory for van der Waals interaction coefficients

AU - Tang, Li-Yan

AU - Yan, Zong-Chao

AU - Shi, Ting-Yun

AU - Mitroy, James

PY - 2011/11/4

Y1 - 2011/11/4

N2 - The third-order expression for the dispersion interaction between two atoms is written as a sum over lists of transition matrix elements. Particular attention is given to the C9/R9 interaction which occurs in the homonuclear case when one atom is in an S state and the other is in a P state. Numerical values of the C9 coefficient are given for the homonuclear alkali-metal dimers. The size of the C9:C3 dispersion coefficient ratio increases for the heavier alkali-metal atoms. The C11 and C13 coefficients between two helium atoms and lithium atoms in their ground states are also given.

AB - The third-order expression for the dispersion interaction between two atoms is written as a sum over lists of transition matrix elements. Particular attention is given to the C9/R9 interaction which occurs in the homonuclear case when one atom is in an S state and the other is in a P state. Numerical values of the C9 coefficient are given for the homonuclear alkali-metal dimers. The size of the C9:C3 dispersion coefficient ratio increases for the heavier alkali-metal atoms. The C11 and C13 coefficients between two helium atoms and lithium atoms in their ground states are also given.

KW - Alkali metal atoms

KW - Alkali-metal dimers

KW - Dispersion coefficient

KW - Dispersion interaction

KW - Helium atom

KW - Homonuclear

KW - Lithium atoms

KW - Numerical values

KW - S state

KW - Third-order

KW - Third-order perturbation

KW - Transition matrix elements

KW - Van Der Waals interactions

KW - Dispersions

KW - Helium

KW - Lithium

KW - Perturbation techniques

KW - Van der Waals forces

KW - Atoms

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U2 - 10.1103/PhysRevA.84.052502

DO - 10.1103/PhysRevA.84.052502

M3 - Article

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JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

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M1 - 052502

ER -

Third-order perturbation theory for van der Waals interaction coefficients

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