An adaptive log-Laguerre spectral method with log-orthogonal functions and inverse operator formulation resolves origin singularities and asymptotic decay in the radial Dirac equation, achieving 10^{-10} relative accuracy across Coulomb, finite-nucleus, and screened potentials.
Purgatorio—a new implementation of the Inferno algorithm.Journal of Quantitative Spectroscopy and Radiative Transfer2006,99, 658–679
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An Adaptive Log-Laguerre Spectral Method for the Radial Dirac Equation: Resolving Asymptotic Decay and Core Singularities in Atomic Calculations
An adaptive log-Laguerre spectral method with log-orthogonal functions and inverse operator formulation resolves origin singularities and asymptotic decay in the radial Dirac equation, achieving 10^{-10} relative accuracy across Coulomb, finite-nucleus, and screened potentials.