Correlation inequalities for the quantum XY model

Costanza Benassi, Benjamin Lees, Daniel Ueltschi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
2 Downloads (Pure)

Abstract

We show the positivity or negativity of truncated correlation functions in the quantum XY model with spin 1/2 (at any temperature) and spin 1 (in the ground state). These Griffiths–Ginibre inequalities of the second kind generalise an earlier result of Gallavotti.
Original languageEnglish
Pages (from-to)1157–1166
Number of pages10
JournalJournal of Statistical Physics
Volume164
Issue number5
Early online date11 Jul 2016
DOIs
Publication statusPublished - Sep 2016
Externally publishedYes

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