Prof. Borot erforscht die topologische Rekursion und ihre Anwendungen in der mathematischen Physik und algebraischen Geometrie. Sein aktueller Fokus liegt auf der Entwicklung verallgemeinerter Formalismen (F-kohomologische Feldtheorien, höhere Airy-Strukturen) und deren Verbindung zu Quantenfeldtheorien, Moduli-Räumen und Zufallsmatrizen. Die Arbeiten verbinden diskrete Strukturen wie zufällige Kacheln und Partitionen mit kontinuierlichen mathematischen Objekten und ermöglichen neue Berechnungsmethoden für komplexe Systeme in der theoretischen Physik und Kombinatorik.
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Prof. Dr. Gaetan Borot
HU-FIS-Profil ↗Generalized Quatum Batalin-Vilkovisky Formalism and Graphical Calculus
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Wissenschaftliche Kommunikation
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GRK 2575: Überdenken der Quantenfeldtheorie
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GRK 2965: Von Geometrie zu Zahlen: Moduli, Hodge Theorie, rationale Punkte
university
Förderer: DFG Exzellenzstrategie Cluster Zeitraum: 03/2026 - 12/2026 Projektleitung: Prof. Dr. Gaetan Borot
Förderer: Horizon Europe: Postdoctoral Fellowship EU (PF-EU) Zeitraum: 09/2026 - 08/2028 Projektleitung: Prof. Dr. Gaetan Borot
Förderer: DFG Graduiertenkolleg Zeitraum: 04/2020 - 03/2029 Projektleitung: Prof. Dr. Jan Plefka
We prove the existence of a 1/N expansion to all orders in β matrix models with a confining, offcritical potential corresponding to an equilibrium measure with a connected support. Thus, the coefficients of the expansion can be obtained recursively by the “topological recursion ” derived in Chekhov and Eynard (JHEP 0612:026, 2006). Our method relies on the combination of a priori bounds on the correlators and the study of Schwinger-Dyson equations, thanks to the uses of classical complex analysis techniques. These a priori bounds can be derived following (Boutet de Monvel et al. in J Stat Phys 79(3–4):585–611, 1995; Johansson in Duke Math J 91(1):151–204, 1998; Kriecherbauer and Shcherbina in Fluctuations of eigenvalues of matrix models and their applications, 2010) or for strictly convex potentials by using concentration of measure (Anderson et al. in An introduction to random matrices, Sect. 2.3, Cambridge University Press, Cambridge, 2010). Doing so, we extend the strategy of Guionnet and Maurel-Segala (Ann Probab 35:2160–2212, 2007), from the hermitian models (β = 2) and perturbative potentials, to general β models. The existence of the first correction in 1/N was considered in Johansson (1998) and more recently in Kriecherbauer and Shcherbina (2010). Here, by taking similar hypotheses, we extend the result to all orders in 1/N.
Journal of Geometry and Physics · DOI
Communications in Number Theory and Physics · DOI
We formulate a notion of "abstract loop equations," and show that their solution is provided by a topological recursion under some assumptions, in particular the result takes a universal form. The Schwinger-Dyson equation of the one-and two-Hermitian matrix models, and of the O(n) model appear as special cases. We study applications to repulsive particles systems, and explain how our notion of loop equations are related to Virasoro constraints. Then, as a special case, we study in detail applications to enumeration problems in a general class of non-intersecting loop models on the random lattice of all topologies, to SU(N ) Chern-Simons invariants of torus knots in the large N expansion. We also mention an application to Liouville theory on surfaces of positive genus.