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- W4313442821 abstract "The electron repulsion integrals over the Slater-type orbitals with non-integer principal quantum numbers are considered. These integrals are useful in both non-relativistic and relativistic calculations of many-electron systems. They involve hyper-geometric functions. Due to the non-trivial structure of infinite series that are used to define them the hyper-geometric functions are practically difficult to compute. Convergence of their series are strictly depends on the values of parameters. Computational issues such as cancellation or round-off error emerge. Relationships free from hyper$-$geometric functions for expectation values of Coulomb potential $left(r_{21}^{-1}right)$ are derived. These relationships are new and show that the complication coming from two-range nature of Laplace expansion for the Coulomb potential is removed. These integrals also form an initial condition for expectation values of a potential with arbitrary power. The electron repulsion integrals are expressed by finite series of power functions. The methodology given here for evaluation of electron repulsion integrals are adapted to multi-center integrals." @default.
- W4313442821 created "2023-01-06" @default.
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- W4313442821 date "2022-12-26" @default.
- W4313442821 modified "2023-10-18" @default.
- W4313442821 title "On the Evaluation of the electron repulsion integrals" @default.
- W4313442821 doi "https://doi.org/10.48550/arxiv.2212.13911" @default.
- W4313442821 hasPublicationYear "2022" @default.
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