On reduced density matrices for disjoint subsystems

F. Iglói, I. Peschel

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

We show that spin and fermion representations for solvable quantum chains lead in general to different reduced density matrices if the subsystem is not singly connected. We study the effect for two sites in XX and XY chains as well as for sublattices in XX and transverse Ising chains.

Original languageEnglish
Article number40001
JournalEPL
Volume89
Issue number4
DOIs
Publication statusPublished - Mar 23 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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