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Quantum Theory of Localized Crystal
Author(s) -
Yukalov V. I.
Publication year - 1979
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.19794910106
Subject(s) - propagator , physics , quantum , lattice (music) , chain (unit) , quantum mechanics , statistical physics , acoustics
A quantum crystal each particle of which is located to a proximity of one lattice point is considered. The causal Green functions at finite temperatures are used. The localized approximation for the iteration of propagator equations is formulated. New type conditions defining parameters of model propagator are proposed. The general method is illustrated with the example of a linear chain.