Accession Number : AD0618440

Title :   SOME REMARKS ON THE USE OF THE VARIATIONAL PRINCIPLE FOR THE SECOND-ORDER ENERGY,

Corporate Author : WISCONSIN UNIV MADISON

Personal Author(s) : Epstein,Jean M. ; Epstein,Saul T.

Report Date : 13 JAN 1965

Pagination or Media Count : 2

Abstract : It is shown that the second-order energy correction calculated by means of the Hylleraas variation principle with an approximate zero-order function need bear no special relationship to the true value. In particular, there may be considerable deviation from the true value even if the approximate zero-order wavefunction is nearly exact, unless one requires that the trial function be orthogonal to the approximate zero-order function. (Author)

Descriptors :   (*CALCULUS OF VARIATIONS, ENERGY), (*QUANTUM THEORY, ENERGY), PERTURBATION THEORY, FIELD THEORY

Distribution Statement : APPROVED FOR PUBLIC RELEASE