publication . Other literature type . Article . 1992

Finitely correlated states on quantum spin chains

Fannes, M.; Bruno Nachtergaele; Werner, Rf;
Open Access English
  • Published: 01 Mar 1992
  • Publisher: Springer-Verlag
Abstract
We study a construction that yields a class of translation invariant states on quantum spin chains, characterized by the property that the correlations across any bond can be modeled on a finite-dimensional vector space. These states can be considered as generalized valence bond states, and they are dense in the set of all translation invariant states. We develop a complete theory of the ergodic decomposition of such states, including the decomposition into periodic “Neel ordered” states. The ergodic components have exponential decay of correlations. All states considered can be obtained as “local functions” of states of a special kind, so-called “purely generat...
Subjects
arXiv: Condensed Matter::Strongly Correlated Electrons
free text keywords: 82B10, 46L60, 82B23, Mathematical Physics, Statistical and Nonlinear Physics
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