Grove Arctic Curves from Periodic Cluster Modular Transformations

Abstract Groves are spanning forests of a finite region of the triangular lattice that are in bijection with Laurent monomials that arise in solutions of the cube recurrence. We introduce a large class of probability measures on groves for which we can compute exact generating functions for edge pro...

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Bibliographic Details
Published in:International Mathematics Research Notices
Main Author: George, Terrence
Format: Article in Journal/Newspaper
Language:English
Published: Oxford University Press (OUP) 2020
Subjects:
Online Access:http://dx.doi.org/10.1093/imrn/rnz367
http://academic.oup.com/imrn/article-pdf/2021/20/15301/40740074/rnz367.pdf
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Summary:Abstract Groves are spanning forests of a finite region of the triangular lattice that are in bijection with Laurent monomials that arise in solutions of the cube recurrence. We introduce a large class of probability measures on groves for which we can compute exact generating functions for edge probabilities. Using the machinery of asymptotics of multivariate generating functions, this lets us explicitly compute arctic curves, generalizing the arctic circle theorem of Petersen and Speyer. Our class of probability measures is sufficiently general that the limit shapes exhibit all solid and gaseous phases expected from the classification of ergodic Gibbs measures in the resistor network model.