We study the branching tree of the perimeters of the nested loops in the non-generic critical model on random quadrangulations. We prove that after renormalization it converges towards an explicit continuous multiplicative cascade whose offspring distribution is related to the jumps of a spectrally positive -stable Lévy process with and for which we have the surprisingly simple and explicit transform
An important ingredient in the proof is a new formula of independent interest on first moments of additive functionals of the jumps of a left-continuous random walk stopped at a hitting time. We also identify the scaling limit of the volume of the critical -decorated quadrangulation using the Malthusian martingale associated to the continuous multiplicative cascade.
Publié le :
DOI : 10.4171/aihpd/94
Mots-clés : $O(n)$ loop model, random planar map, multiplicative cascade, invariance principle, stable Lévy process
@article{AIHPD_2020__7_4_535_0, author = {Chen, Linxiao and Curien, Nicolas and Maillard, Pascal}, title = {The perimeter cascade in critical {Boltzmann} quadrangulations decorated by an $O(n)$ loop model}, journal = {Annales de l{\textquoteright}Institut Henri Poincar\'e D}, pages = {535--584}, volume = {7}, number = {4}, year = {2020}, doi = {10.4171/aihpd/94}, mrnumber = {4182775}, zbl = {1454.05106}, language = {en}, url = {http://archive.numdam.org/articles/10.4171/aihpd/94/} }
TY - JOUR AU - Chen, Linxiao AU - Curien, Nicolas AU - Maillard, Pascal TI - The perimeter cascade in critical Boltzmann quadrangulations decorated by an $O(n)$ loop model JO - Annales de l’Institut Henri Poincaré D PY - 2020 SP - 535 EP - 584 VL - 7 IS - 4 UR - http://archive.numdam.org/articles/10.4171/aihpd/94/ DO - 10.4171/aihpd/94 LA - en ID - AIHPD_2020__7_4_535_0 ER -
%0 Journal Article %A Chen, Linxiao %A Curien, Nicolas %A Maillard, Pascal %T The perimeter cascade in critical Boltzmann quadrangulations decorated by an $O(n)$ loop model %J Annales de l’Institut Henri Poincaré D %D 2020 %P 535-584 %V 7 %N 4 %U http://archive.numdam.org/articles/10.4171/aihpd/94/ %R 10.4171/aihpd/94 %G en %F AIHPD_2020__7_4_535_0
Chen, Linxiao; Curien, Nicolas; Maillard, Pascal. The perimeter cascade in critical Boltzmann quadrangulations decorated by an $O(n)$ loop model. Annales de l’Institut Henri Poincaré D, Tome 7 (2020) no. 4, pp. 535-584. doi : 10.4171/aihpd/94. http://archive.numdam.org/articles/10.4171/aihpd/94/
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