Benassi, Costanza, Lees, Benjamin and Ueltschi, Daniel (2016) Correlation inequalities for the quantum XY model. Journal of Statistical Physics, 164 (5). pp. 1157-1166. doi:10.1007/s10955-016-1580-2 ISSN 0022-4715.

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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.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science, Engineering and Medicine > Science > Mathematics
Library of Congress Subject Headings (LCSH):	Quantum systems, Rotational motion
Journal or Publication Title:	Journal of Statistical Physics
Publisher:	Springer New York LLC
ISSN:	0022-4715
Official Date:	September 2016
Dates:	Date Event September 2016 Published 11 July 2016 Available 30 June 2016 Accepted 11 April 2016 Submitted
Volume:	164
Number:	5
Page Range:	pp. 1157-1166
DOI:	10.1007/s10955-016-1580-2
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access (Creative Commons)
Date of first compliant deposit:	13 September 2016
Date of first compliant Open Access:	13 September 2016
Funder:	Engineering and Physical Sciences Research Council (EPSRC)
Grant number:	EP/HO23364/1
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