Chenjiayue Qi

I'm currently a second-year Ph.D. student at IHES, University of Paris-Saclay. At IHES, I'm fortunate to have Thierry Bodineau as my PhD supervisor, and also to work with Laure Saint-Raymond.

E-mail: chenjiayue@ihes.fr

Research Interest

Large-scale behavior of interacting particle systems, deterministic (hard sphere gas) or stochastic (simple exclusion process).
Regularity and irregularity of Boltzmann equation and fluid equations.

Research Articles

Boltzmann equation, Hard Sphere Gas, and Kinetic Limit for Unbounded Initial Data. in preparation.
Singular Large Deviation of Current for Symmetric Simple Exclusion Process. In preparation.
Global Solution of a Functional Hamilton-Jacobi Equation associated with a Hard Sphere Gas. arXiv:2409.02805, Submitted. Slide: 1hr version Poster Slide: 20mins version
An Infinite-times Renewal Equation. arXiv:2304.01605, with Xu'an Dou, Benoît Perthame, Delphine Salort, and Zhennan Zhou. Submitted. Slide

Research Visit

From 3rd November to 23th November, at Sapienza University of Rome , invited by Prof. Sergio Simonella .

Research Talks

Invited talk at University Evry Paris-Saclay, time to be added.
Invited talk at Sapienza University of Rome, 5th November 2025.
Statistical Aspects of Nonlinear Physics, IHES, short talk, 3rd July 2025.
Kinetic Equations and Turbulence (On the occasion of Claude Bardos's 85th Birthday), Poster Presentation, 8th Apr 2025.
Markov Chain Working Group, at LJLL of Sorbonne Université, invited talk, 13th Mar 2025.
Seminar on Probability and Financial Maths, at LaMME of University Evry Paris-Saclay, invited talk, 19th Dec 2024.
LJLL PhD Seminar, at LJLL of Sorbonne Université, invited talk, 16th Oct 2024.
Analysis Research Interaction Team Seminar, at BICMR of Peking University, invited talk, 26th Sep 2024.
Zu Chongzhi Center Mathematics Research Seminar, at Zu Chongzhi Center for Mathematics and Computational Sciences of Duke Kunshan University, invited talk, 7th Apr 2023.
Research Seminar of Zhennan Zhou, at BICMR of Peking University, invited talk, 6th Apr 2023.

Photo taken by @Flann Mérer at IHES

Photo taken by @Ning Jiang at IHES

Education

2024.9-2027.9 (Expected): Ph.D. Candidate at IHES, University of Paris-Saclay, thesis supervised by Thierry Bodineau.
In 2024.9, I obtained my M2 (Second Year of Master) degree at University of Paris-Saclay, thesis supervised by Laure Saint-Raymond.
In 2023.7, I obtained my Bachelor Degree with major in Philosphy, at Peking University.

Scholarships and Fellowships

FMJH PhD-Track Fellowship (two recipients each year), 2023.9.
Sophie-Germain Master Scholarship, 2023.9.