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Polypeptides having secondary structures often undergo self-assembly which can extend
over multiple length scales. Poly (γ-benzyl-L-glutamate)(PBLG), for example, folds into α …

A survey of analytic techniques for solving the two-electron atomic Schrodinger equation is
presented. The hyperspherical formalism is introduced and specialised to the case of two …

The angular coefficients ψ k, p (α, θ) of the Fock expansion characterizing the S-state wave
function of the two-electron atomic system are calculated in hyperspherical angular …

Abstract Series of gamma functions can usually be expressed as generalised
hypergeometric functions of one or more variables, providing a tool for classifying series …

Terms in a few-particle wavefunction, written as an expansion of homogeneous functions,
are derived by a method which resembles standard techniques for solving differential …

The author has evaluated the first five terms in the asymptotic series for the wavefunctions of
two-electron systems. The general approach is also useful for evaluating perturbed …

Collinear configurations of the helium-like atomic systems, relevant, eg, for the quasifree
mechanism of the double photoionization of helium, are studied, parameterized by the …

We extend our approach of asymptotic parametrix construction for Hamiltonian operators
from conical to edge-type singularities which is applicable to coalescence points of two …

The form of the wave function at three-electron coalescence points is examined for several
spin states using an alternative method to the usual Fock expansion. We find that, in two-and …