famine 发表于 2025-3-28 18:16:53
http://reply.papertrans.cn/79/7815/781450/781450_41.pngBAIT 发表于 2025-3-28 19:08:10
Inelastic Scattering of Photons from Ionic Crystals and Effects of Overlap,erimental technique in general and the basic theoretical assumptions are discussed. The Compton profile of ionic crystals is evaluated on the basis of a tight-binding (Heitler — London) model and Löwdin’s expansion in terms of overlap integrals. Comparison between experimental and theoretical resultirreparable 发表于 2025-3-29 01:55:29
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Test of the Conventional Quantum Chemistry Methods on the Hydrogen Atom,roblem of the hydrogen atom, a case where the quantities of interest are known exactly. The variation principle, δ<H> = 0, is used to approximate energy eigenvalues and the corresponding eigenfunctions. As basis functions, two simple sets are chosen: a) Gaussians, exp(-kηr.); k = 1, 2,...N, and b) eanimated 发表于 2025-3-29 20:56:57
,Numerical Aspects of Weyl’s Theory,condition at the right endpoint x = b of the interval , Weyl /1/ found that m had to lie on a circle in the complex plane. For the singular case, b → ∞, Weyl’s circle shrinks either to a limit circle or to a limit point m.(λ). For most physical examples the differential operator is of limit poi贪婪性 发表于 2025-3-30 00:22:08
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