The eigenfunction problem in higher dimensions: Asymptotic theory

AUTOR(ES)

Sirovich, Lawrence

RESUMO

The spectral problem for linear operators on fully infinite domains is considered. A transformation first introduced by Wigner is used to show a number of asymptotic results. The method leads to a WKB (Wentzel-Kromers-Brillouin) theory for operators in more than one dimension. This includes practical tools for the approximate evaluation of spectra and eigenfunctions. Several general examples are developed.

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