Recurrence of bipartite planar maps

Jakob Erik Björnberg (Uppsala University)
Sigurdur Örn Stefánsson (Uppsala University)

Abstract


This paper concerns random bipartite planar maps which are defined by assigning weights to their faces. The paper presents a threefold contribution to the theory. Firstly, we prove the existence of the local limit for all choices of weights and describe it in terms of an infinite mobile. Secondly, we show that the local limit is in all cases almost surely recurrent.  And thirdly, we show that for certain choices of weights the local limit has exactly one face of infinite degree and has in that case spectral dimension 4/3 (the latter requires a mild moment condition).

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Pages: 1-40

Publication Date: March 12, 2014

DOI: 10.1214/EJP.v19-3102

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