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The Gaussian free field in interlacing particle systems. (English) Zbl 1315.60061

Summary: We show that if an interlacing particle system in a two-dimensional lattice is a determinantal point process, and the correlation kernel can be expressed as a double integral with certain technical assumptions, then the moments of the fluctuations of the height function converge to that of the Gaussian free field. In particular, this shows that a previously studied random surface growth model with a reflecting wall has Gaussian free field fluctuations.

MSC:

60G60 Random fields
60K35 Interacting random processes; statistical mechanics type models; percolation theory
60G15 Gaussian processes
60G55 Point processes (e.g., Poisson, Cox, Hawkes processes)