Correlation functions of integrable O(n) spin chains

We study the correlation functions of the integrable O(n) spin chain in the thermodynamic limit. We addressed the problem of solving functional equations of the quantum Knizhnik Zamolodchikov type for density matrix related to the O(n) spin chain. We give the explicit solution for two-sites density...

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Bibliographic Details
Published in:Nuclear physics. B 2020-08, Vol.957, p.115106, Article 115106
Main Author: Ribeiro, G.A.P.
Format: Article
Language:English
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Summary:We study the correlation functions of the integrable O(n) spin chain in the thermodynamic limit. We addressed the problem of solving functional equations of the quantum Knizhnik Zamolodchikov type for density matrix related to the O(n) spin chain. We give the explicit solution for two-sites density matrix elements for the O(n) which are then evaluated for the n=3,4,…,8 cases at zero temperature.
ISSN:0550-3213
1873-1562
DOI:10.1016/j.nuclphysb.2020.115106