Ergodicity in strongly correlated systems

We present a concise and systematic review of the ergodicity issue in strongly correlated systems. After giving a brief historical overview, we analyze the issue within the Green’s function formalism by means of the equations of motion approach. By means of this analysis, we are able to identify t...

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Bibliographic Details
Published in:Condensed Matter Physics
Date:2006
Main Authors: Avella, A., Mancini, F., Plekhanov, E.
Format: Article
Language:English
Published: Інститут фізики конденсованих систем НАН України 2006
Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/121374
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Ergodicity in strongly correlated systems / A. Avella, F. Mancini, E. Plekhanov // Condensed Matter Physics. — 2006. — Т. 9, № 3(47). — С. 485–497. — Бібліогр.: 19 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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Summary:We present a concise and systematic review of the ergodicity issue in strongly correlated systems. After giving a brief historical overview, we analyze the issue within the Green’s function formalism by means of the equations of motion approach. By means of this analysis, we are able to identify the primary source of non-ergodic dynamics for a generic operator as well as to give a recipe for computing unknown quantities characterizing such a behavior within the Composite Operator Method. Finally, we present examples of nontrivial strongly correlated systems where it is possible to find a non-ergodic behavior. Представлено короткий але систематичний розгляд проблеми ергодичностi в сильноскорельованих системах. Пiсля короткого iсторичного огляду ми аналiзуємо це питання в рамках формалiзму функцiй Грiна за допомогою методу рiвнянь руху. За допомогою цього аналiзу ми можемо видiлити першоджерела неергодичної динамiки оператора а також дати спосiб розрахунку невiдомих величин, що характеризують таку поведiнку, в рамках методу композитних операторiв. Також представлено приклади нетривiальних сильноскорельованих систем де можлива неергодична поведiнка.
ISSN:1607-324X