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Unicellular maps vs hyperbolic surfaces in high genus

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Authors : Louf, Baptiste (Author of the conference)
CIRM (Publisher )

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Abstract : In the past few years, the study of the geometric properties of random maps has been extended to a new regime, the 'high genus regime', where we are interested in maps whose size and genus tend to infinity at the same time, at the same rate.
We consider here a slightly different case, where the genus also tends to infinity, but less rapidly than the size, and we study the law of simple cycles (with a well-chosen rescaling of the graph distance) in unicellular maps (maps with one face), thanks to a powerful bijection of Chapuy, Féray and Fusy.
The interest of this work is that we obtain exactly the same law as Mirzakhani and Petri who counted closed geodesics on a model of random hyperbolic surfaces in large genus (the Weil- Petersson measure). This leads us to conjecture that these two models are somehow 'the same' in the limit.

Keywords : large genus; random maps; hyperbolic surfaces

MSC Codes :
05C10 - Planar graphs; geometric and topological aspects of graph theory
05C80 - Random graphs
60C05 - Combinatorial probability
60D05 - Geometric probability and stochastic geometry

Additional resources :
https://www.cirm-math.fr/RepOrga/2528/Slides/Pres.pdf

    Information on the Video

    Film maker : Hennenfent, Guillaume
    Language : English
    Available date : 04/02/2022
    Conference Date : 17/01/2022
    Subseries : Research talks
    arXiv category : Probability ; Combinatorics ; Geometric Topology
    Mathematical Area(s) : Combinatorics ; Probability & Statistics ; Topology
    Format : MP4 (.mp4) - HD
    Video Time : 00:49:19
    Targeted Audience : Researchers
    Download : https://videos.cirm-math.fr/2022-01-17_Louf.mp4

Information on the Event

Event Title : Random Geometry / Géométrie aléatoire
Event Organizers : Curien, Nicolas ; Goldschmidt, Christina ; Le Gall, Jean-François ; Miermont, Grégory ; Rhodes, Rémi
Dates : 17/01/2022 - 21/01/2022
Event Year : 2022
Event URL : https://conferences.cirm-math.fr/2528.html

Citation Data

DOI : 10.24350/CIRM.V.19876203
Cite this video as: Louf, Baptiste (2022). Unicellular maps vs hyperbolic surfaces in high genus. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.19876203
URI : http://dx.doi.org/10.24350/CIRM.V.19876203

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