Title: Dynamics of quantum fluctuations in an anharmonic crystal model
Authors: Verbeure, AndrĂ© ×
Zagrebnov, Va #
Issue Date: Apr-1995
Publisher: Kluwer Academic Publishers
Series Title: Journal of statistical physics vol:79 issue:1-2 pages:377-393
Abstract: For a model given previously by the authors describing a structural phase transition we compute the q-mode critical fluctuations of momentum and displacement as a function of the critical temperatures, the wave vector q, and a fading-out external field. An explicit dependence on the rates of fading out is obtained. In order to define the critical fluctuation operators we prove a reconstruction theorem, which is of model-independent value. Finally we study the critical spectrum and get rigorous results on the soft modes and the central peak.
ISSN: 0022-4715
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Theoretical Physics Section
× corresponding author
# (joint) last author

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