2023
DOI: 10.1016/j.jcp.2022.111831
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A novel tetrahedral spectral element method for Kohn-Sham model

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“…For the ground state calculation, concerned with the nonlinearity of the Kohn-Sham equation caused by the Hamiltonian operator, the self consistent field (SCF) iteration is a classical choice [22,24]. Several types of numerical methods are employed in the simulation of Kohn-Sham equation, such as finite element methods [2,4,12,20], finite difference methods [30], spectral methods [18,25,35], discontinuous Galerkin methods [23], finite volume methods [9], plane-wave methods [17], etc. Besides directly solving the Kohn-Sham equation, minimizing the total energy is also a popular way to obtain the ground state of the quantum system.…”
Section: Introductionmentioning
confidence: 99%
“…For the ground state calculation, concerned with the nonlinearity of the Kohn-Sham equation caused by the Hamiltonian operator, the self consistent field (SCF) iteration is a classical choice [22,24]. Several types of numerical methods are employed in the simulation of Kohn-Sham equation, such as finite element methods [2,4,12,20], finite difference methods [30], spectral methods [18,25,35], discontinuous Galerkin methods [23], finite volume methods [9], plane-wave methods [17], etc. Besides directly solving the Kohn-Sham equation, minimizing the total energy is also a popular way to obtain the ground state of the quantum system.…”
Section: Introductionmentioning
confidence: 99%