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A complete proof that square ice entropy is $\tfrac 32\log _{2} (4/3)$
Published online by Cambridge University Press: 28 April 2022
Abstract
In this text, we provide a fully rigorous and complete proof of E.H. Lieb’s statement that (topological) entropy of square ice (or six-vertex model, XXZ spin chain for anisotropy parameter $\Delta =1/2$ ) is equal to $\tfrac 32\log _{2} (4/3)$ .
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- © The Author(s), 2022. Published by Cambridge University Press