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Superharmonic Approximation for Crystal
Author(s) -
Yukalov V. I.
Publication year - 1980
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.19804920303
Subject(s) - propagator , generalization , crystal (programming language) , physics , subharmonic function , equations of motion , iterative method , quantum , quantum mechanics , mathematical analysis , mathematics , mathematical physics , statistical physics , computer science , mathematical optimization , programming language
The localized approximation for a quantum crystal considered earlier by the author is taken here as the initial step of an iteration, and the higher approximations for the propagators and thermodynamic functions are calculated. This generalization is based on a new type of a double iterative procedure for the equation of motion. The method is illustrated with a three‐dimensional crystal.