Correlation Inequalities for the Quantum XY Model
نویسندگان
چکیده
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.
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عنوان ژورنال:
دوره 164 شماره
صفحات -
تاریخ انتشار 2016