Valentin Bonzom

LIPN, Institut Galilée, UMR CNRS 7030
Université Paris 13, Sorbonne Paris Cité
99, avenue Jean-Baptiste Clément
93430 Villetaneuse
My Research interests

Mostly combinatorial problems from high-energy physics and a bit of statistical physics, and from low-dimensional topology and geometry on the mathematical side.
Combinatorial physics is one of the two axes of the CALIN team in LIPN!
  • Combinatorial methods in quantum gravity
  • Combinatorics of graphs, trees, maps and higher dimensional structures
  • Random matrix models and random tensor models
  • Topological gauge theories, quantum invariants of manifolds
  • Spin networks and spin foam models
  • Combinatorics of low-dimensional topology and geometry


All preprints available here on the arxiv! You can find my Ph.D. manuscript, in French, here.

I have had 20 co-authors, including 7 Master or Ph.D. students.
More stats from the high energy physics database here!

Recent preprints: the stuff I am excited about in these days!
  • "Duality between Spin networks and the 2D Ising model,'' VB, Francesco Costantino and Etera R. Livine. arxiv:1504.02822
  • "Enhancing non-melonic triangulations: A tensor model mixing melonic and planar maps,'' VB, Thibault Delepouve and Vincent Rivasseau. Accepted in Nucl. Phys. B. arxiv:1502.01365
  • "Deformed phase space for 3d loop gravity and hyperbolic discrete geometries," VB, Maité Dupuis, Florian Girelli, Etera R. Livine. arXiv:1402.2323

More accessible, introductory/survey articles
  • "Tensor models from the viewpoint of matrix models: the case of loop models on random surfaces," VB and Frédéric Combes. Annales Henri Poincaré D 2, 1 (2015). arXiv:1304.4152
  • "Random tensor models in the large N limit: Uncoloring the colored tensor models," VB, Razvan Gurau and Vincent Rivasseau. Phys. Rev. D 85, 084037 (2012). arXiv:1202.3637
  • "Gauge symmetries in spinfoam gravity: the case for "cellular quantization"," VB and Matteo Smerlak. Phys. Rev. Lett. 108, 241303 (2012). arXiv:1201.4996
  • "Lessons from Toy-Models for the Dynamics of Loop Quantum Gravity," VB and Alok Laddha. SIGMA 8 (2012), 009. arXiv:1110.2157
  • "Bubble divergences: sorting out topology from cell structure," VB and Matteo Smerlak. Annales Henri Poincaré 13 (2012) 185. arXiv:1103.3961

Selected publications
  • "The calculation of expectation values in Gaussian random tensor theory via meanders," VB and Frédéric Combes, Annales Henri Poincaré D 1, 443 (2015). arXiv:1310.3606
  • "Critical behavior of colored tensor models in the large N limit," VB, Razvan Gurau, Aldo Riello and Vincent Rivasseau, Nucl. Phys. B 853, 174 (2011). arXiv:1105.3122
  • "Dirac's discrete hypersurface deformation algebras," VB and Bianca Dittrich, Class. Quant. Grav. 30 (2013) 205013. arXiv:1304.5983
  • "Bubble divergences from twisted cohomology," VB and Matteo Smerlak, Commun. Math. Phys. 312, 399 (2012). arXiv:1008.1476


I am an Assistant Professor at IUT Saint-Denis, France, and a member of the Laboratoire d'Informatique de Paris Nord (LIPN) in the team Combinatoire, ALgorithmique et INteractions (CALIN). I was offered that position in 2013.

Before that, I was a postdoctoral fellow at Perimeter Institute for Theoretical Physics, Waterloo, Ontario, Canada, from 2010 to 2013. I was supported by a MRI grant from the Government of Ontario. In 2013 I was a recipient of the Banting Fellowship, which I declined in favor of my present position.

Research project supervision

Jan-Feb 2014
Luca Lionni (M2 ENS Paris)

Jan-July 2013
Frédéric Combes (M1 ENS Lyon)

Summer 2012
Yechao Elton Zhu (Queens' college, Cambridge)

Winter 2012
Harold Erbin (M2 ENS Paris)

Summer 2011
Pierre Fleury (M1 ENS Lyon)