## Atomic scattering theory: mathematical and computational aspects : proceedings of a conference held at University of Western Ontario, June 7-9, 1978John Nuttall |

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### Contents

An Overview of Rigorous Scattering Theory | 1 |

Towards Dispersion Relations for Atomic Scattering | 25 |

Spectral Density and Sojourn Times | 45 |

Copyright | |

13 other sections not shown

### Common terms and phrases

Agmon analytic continuation angular momentum approach approximation asymptotic completeness atom scattering basis functions bound canonical channel clusters computational continuous spectrum continuum convergence correlation corresponding Coulomb potentials Coulomb scattering cross section cut-off defined denote diagonal dilation analyticity discrete discussed eigenvalues elastic scattering electron energy energy-shell Enss equations essential spectrum estimate exist exponential finite formalism given Green's function half-shell T-matrices Hamiltonian Hilbert space ICPEAC integral interaction kernel Kohn limit linear Lippmann-Schwinger equations Math mathematical Nesbet nonsingular VP Null space obtain off-shell on-shell Ontario orbital orthogonal parameters particle phase shift Phys plane wave-projected positron positronium potential scattering problem properties quadrature quantum R-matrix radial region renormalized resonance s-wave satisfies scattering amplitude scattering theory short-range Simon singular VP solution stationary target THEOREM threshold time-dependent trace class transformation trial function two-electron vector wave function wave operators Whittaker Function zero