We study deviation probabilities for the number of high positioned particles in branching Brownian motion and confirm a conjecture of Derrida and Shi. We also solve the corresponding problem for the two-dimensional discrete Gaussian free field. Our method relies on an elementary inequality for inhomogeneous Galton–Watson processes.
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Dedicated to the memory of Professor V. N. Sudakov
Published in Zapiski Nauchnykh Seminarov POMI, Vol. 457, 2017, pp. 12–36.
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Aïdékon, E., Hu, Y. & Shi, Z. Large Deviations for Level Sets of a Branching Brownian Motion and Gaussian Free Fields. J Math Sci 238, 348–365 (2019). https://doi.org/10.1007/s10958-019-04243-8
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DOI: https://doi.org/10.1007/s10958-019-04243-8