Invited researchers - IHES

Invited researchers

The visitor programme represents the institute’s most important scientific activity. Each year, around 200 researchers are selected by the Scientific Council, after an application procedure. Drawn by the spontaneous and sometimes unexpected interactions that the Institute makes possible and encourages, visitors stay on average for 2.5 months.
Triennial chairs provide considerable flexibility for organising scientific activities, with the possibility of inviting collaborators and organising events, and chair holders can stay for longer periods at the Institute.

Apply



The Schlumberger Chair for Mathematical Sciences

This chair was created in 2006 thanks to the trust and support of Schlumberger and is dedicated to topics at the interface with high technology. More information.

  • portrait Yves Barral

    Yves Barral, Theoretical Biology

    Schlumberger Chair for Mathematical Sciences

    Yves Barral works in biology, guided by the question of the links between mathematics and biology, and why these links remain confused and little explored.

  • portrait professeur Clément Mouhot

    Clément Mouhot, mathematician

    Schlumberger Chair for Mathematical Sciences

    Clément Mouhot is a professor of mathematics at the University of Cambridge. He is interested in the mathematical analysis of the foundations of statistical mechanics, at the interface of partial differential equations, probabilities, and functional inequalities.

  • professeur Pierre Raphael

    Pierre Raphael, mathematician

    Schlumberger Chair for Mathematical Sciences

    Pierre Raphael is the Herchel Smith Professor of Pure Mathematics at the Faculty of Mathematics of Cambridge.

    His research on non-linear partial differential equations aims at the description of energy concentration mechanisms and singularity formation during the propagation of non-linear waves



The Gretchen and Barry Mazur Chair

Created in 2018 by William R. Hearst III in tribute to Mazur couple, this Chair is reserved to a Professor in Mathematics.



The Alexzandria Figueroa and Robert Penner Chair

Created by Robert Penner, a mathematician and invited researcher for more than 25 years, the Alexzandria Figueroa and Robert Penner Chair enables one to receive a high-caliber mathematician. More information.

  • portrait professeur Gérard Ben Arous

    Gérard Ben Arous, mathematician

    Alexzandria Figueroa and Robert Penner Chair since 2023

    Gérard Ben Arous is a professor of mathematics at the Courant Institute of Mathematical Sciences at New York University and a specialist in probability theory and its applications.



Israel Gelfand Chair in mathematics

The Israel Gelfand Chair was created in 2014 in honour of the great mathematician. It symbolises scientific excellence and the sharing of knowledge, two of the Institute’s fundamental values. Israel Gelfand himself came to IHES more than ten times to carry out his research. Since 2024, Israel Gelfand Chair is supported by Squarepoint Foundation. More information.

  • portrait professeur Dennis Gaitsgory

    Dennis Gaitsgory, mathematician

    Israel Gelfand Chair of Mathematics, funded by the Squarepoint Foundation

    Dennis Gaitsgory is a professor of mathematics at Max-Planck-Institute for Mathematics, Bonn, known for his research on the geometric Langlands program.

  • portrait Takeshi Saito

    Takeshi Saito, mathematician

    Israel Gelfand Chair in mathematics, funded by Squarepoint Foundation

    Takeshi Saito, professor of mathematics at the University of Tokyo, is an expert in arithmetic geometry, known especially for his fundamental contributions to ramification theory of local fields and I-adic sheaves, étale cohomology, and Galois representations.



Louis Michel Chair for Theoretical Physics

The Louis Michel Chair for Theoretical Physics was created in 2000 in honour of Louis Michel, permanent professor in physics from 1962 to 1992. More information.

  • portrait professeur Anton Kapustin

    Anton Kapustin, physicist

    Louis Michel Chair

    Anton Kapustin is a theoretical physicist at the California Institute of Technology. He is interested in quantum field theory in general, with applications to particle physics and condensed matter theory.

  • Dam Thanh Son, Physicist

    Louis Michel Chair

    Dam Thanh Son is a Professor of Physics at the University of Chicago. He is interested in a wide range of problems in theoretical physics, including the fractional quantum Hall effect, physics of the quark/gluon plasma, gauge/gravity duality, physics of cold atom, and other topics.



René Thom Chair

Created in 2013 in honour of René Thom, a mathematician and permanent professor at IHES from 1963 to 1990, this chair supports a researcher working on theoretical biology.

Name Date Research field
Nang Philibert
Ecole Normale Supérieure
from 16/10/2025
to 29/12/2025
Mathématiques
Théorie des D-modules
Rettegno Piero
INFN - Sezione di Perugia
from 20/10/2025
to 10/11/2025
Physique
Gravitational waves
Mathew Akhil
University of Chicago
from 26/10/2025
to 02/11/2025
Mathématiques
Arithmetic geometry and homotopy theory
Albanesi Simone
Friedrich-Schiller-Universität Jena
from 27/10/2025
to 14/11/2025
Physique
Gravitational waves
Usseglio Davide
Scuola Superiore Meridionale (SSM)
from 01/11/2025
to 31/10/2027
Physique
Gravitational wave physics
Denisov Sergey
UW-Madison
from 01/11/2025
to 01/12/2025
Mathématiques
Analysis and PDE
Nagar Alessandro
INFN, Sezione di Torino
from 01/11/2025
to 30/11/2025
Physique
General Relativity, Gravitational Waves
Goswami Souvik
University of Barcelona
from 01/11/2025
to 30/11/2025
Mathématiques
Algebraic cycles, Hodge theory, Arakelov geometry.
Banerjee Sibasish
IHES
from 01/11/2025
to 28/02/2026
Mathématiques
Mathematical Physics
Bini Donato
Istituto per le Applicazioni del Calcolo
from 02/11/2025
to 15/11/2025
Physique
General Relativity
Ghosh Saptaswa
Indian Institute of Technology Gandhinagar
from 03/11/2025
to 14/11/2025
Physique
High Energy Physics Theory
Chiaramello Danilo
Università degli Studi di Torino
from 03/11/2025
to 21/11/2025
Physique
Gravitational wave modeling
Altoum Alnour
University of Nyala
from 03/11/2025
to 23/11/2025
Mathématiques
Number theory
Vlassopoulos Ioannis
Athena Research Center
from 10/11/2025
to 20/12/2025
Mathématiques
Mathematical Language modeling and Machine Learning, Non-Commutative Geometry
Mulherkar Siddharth
University of California, Los Angeles
from 15/11/2025
to 30/03/2026
Mathématiques
Fourier Analysis, Probability Theory
Huang Pengfei
Nanjing University
from 20/11/2025
to 20/12/2025
Mathématiques
Algebraic geometry, differential geometry, and mathematical physics
Elkhidir Asaad
University of Edinburgh
from 30/11/2025
to 30/11/2026
Physique
Scattering Amplitudes
Kim Inkang
KIAS
from 01/12/2025
to 31/01/2026
Mathématiques
Geometrie hyperbolique
Ma Xiao
University of Michigan, Ann Arbor
from 01/12/2025
to 01/02/2026
Mathématiques
Dispersive equation and statistical physics
Darbinyan Arman
University of Southampton
from 04/12/2025
to 04/01/2026
Mathématiques
Geometric group theory, computability theory, theoretical computer science
Goncharov Alexander
Yale UNiversity
from 06/12/2025
to 31/12/2025
Mathématiques
Arithmetic Algebraic Geometry. Mathematical Physics. PS. I completed the only link for the application for a regular IHES visit available at the moment at the IHES website. I hope I completed the correct form.
Kim Kihyun
Seoul National University
from 07/12/2025
to 28/01/2026
Mathématiques
Partial differential equations, nonlinear dispersive equations
Onn Uri
The Australian National University
from 15/12/2025
to 16/01/2026
Mathématiques
representation theory, asymptotic group theory, p-adic groups, special functions
Sharygin Georgy
Moscow State University
from 01/01/2026
to 08/02/2026
Mathématiques
Mathématiques, géometrie non-commutative, topologie algébrique
AbdusSalam Shehu
Shahid Beheshti University
from 01/01/2026
to 31/03/2026
Physique
Theoretical Physics and Particle Physics Phenomenology
Temkin Michael
Hebrew University
from 05/01/2026
to 28/02/2026
Mathématiques
algebraic geometry, non-archimedean geometry
Fu Siqi
Rutgers University-Camden
from 05/01/2026
to 06/02/2026
Mathématiques
Spectral theory of partial differential operators, several complex variables, complex geometry, and CR geometry
Saponov Pavel
National Research University Higher School of Economics, faculty of mathematics
from 05/01/2026
to 05/02/2026
Mathématiques
quantum algebra, integrable systems
Yu Nina
Xiamen University
from 12/01/2026
to 10/02/2026
Physique
Vertex Operator Algebra, Mathematical Physics
Sun Kaiwen
University of Science and Technology of China
from 12/01/2026
to 10/02/2026
Physique
conformal field theory, supersymmetric gauge theory, topological string theory, modular form
Malinzi Joseph
University of Eswatini
from 15/01/2026
to 15/02/2026
Mathématiques
Mathematical Biology
Dona Daniele
Alfréd Rényi Institute of Mathematics
from 19/01/2026
to 15/02/2026
Mathématiques
Algebra, group theory, combinatorics
Chavda Ameya
Columbia University
from 02/02/2026
to 06/03/2026
Physique
HET--golstone physics, EFT techniques, amplitudes
Markou Chrysoula
Scuola Normale Superiore
from 02/02/2026
to 14/02/2026
Physique
hep-th
Sokolov Vladimir
Higher School of Modern Mathematics MIPT
from 02/02/2026
to 30/04/2026
Mathématiques
Integrable models
Vallette Bruno
Université Sorbonne Paris Nord
from 02/02/2026
to 28/06/2026
Mathématiques
Algebra, Geometry, Topology, Mathematical Physics
Vasseur Alexis
The University of Texas at Austin
from 02/02/2026
to 31/07/2026
Mathématiques
Équations aux dérivées partielles, applications aux fluides.
Chervov Alexander
Institute Theoretical Experimental Physics
from 03/02/2026
to 28/06/2026
Mathématiques
Machine learning, representation theory, Langlands correspondence
Tsuji Takeshi
Graduate School of Mathematical Sciences, The University of Tokyo
from 09/02/2026
to 21/02/2026
Mathématiques
Number Theory, Arithmetic Geometry
Akanni John
KolaDaisi University Ibadan, Oyo State, Nigeria
from 16/02/2026
to 12/04/2026
Mathématiques
Mathematical Epidemiology (Stochastic modelling)
Flamm Xenia Lorena
Ihes
from 01/03/2026
to 31/10/2026
Mathématiques
Discrete subgroups of Lie groups, higher Teichmüller theory and its relation to geometric structures
Berean-Dutcher Jonah
University of British Columbia
from 01/03/2026
to 28/06/2026
Physique
Quantum Field Theory and Scattering Amplitudes
Bini Donato
Istituto per le Applicazioni del Calcolo
from 02/03/2026
to 30/04/2026
Physique
General Relativity
Roubtsov Volodya
Université d'Angers
from 02/03/2026
to 02/05/2026
Mathématiques
Physique mathématique, Géométrie, EquaDiff
Katz Emanuel
Boston University
from 01/04/2026
to 30/06/2026
Physique
Quantum Theory
Nakanishi Kenji
Osaka University
from 01/04/2026
to 30/06/2026
Mathématiques
Buium Alexandru
University of New Mexico
from 01/04/2026
to 30/04/2026
Mathématiques
p-adic geometry
Pfaff Catherine
Institute for Advanced Study
from 01/04/2026
to 30/05/2026
Mathématiques
Geometric group theory
Turchin Victor
Kansas State University
from 01/04/2026
to 30/05/2026
Mathématiques
Topologie Algébrique
Stange Katherine
University of Colorado Boulder
from 01/04/2026
to 11/07/2026
Mathématiques
Number theory
Esnault Hélène
Freie Universität Berlin
from 13/04/2026
to 12/07/2026
Mathématiques
Odesski Alexandre
Brock University
from 13/04/2026
to 13/06/2026
Mathématiques
Mathematical Physics
Salvatore Paolo
Università di Roma Tor Vergata
from 13/04/2026
to 16/05/2026
Mathématiques
Algebraic Topology
Medina-Mardones Anibal
Western University
from 20/04/2026
to 04/07/2026
Mathématiques
combinatorial topology, homotopical algebra, mathematical physics
Soibelman Alexander
.IHES
from 23/04/2026
to 31/08/2026
Mathématiques
Algebraic geometry, representation theory
Soibelman Yan
Kansas State University
from 23/04/2026
to 31/08/2026
Mathématiques
Algebraic Geometry, Symplectic Geometry, Mathematical Physics
Xu Yujie
Columbia University
from 30/04/2026
to 30/06/2026
Mathématiques
Number Theory, Arithmetic Geometry, and Representation Theory
Shen Yefeng
University of Oregon
from 01/05/2026
to 30/06/2026
Mathématiques
Mirror symmetry
Sageev Michah
Technion - ITT
from 01/05/2026
to 31/08/2026
Mathématiques
Geometric Group Theory
Arunachalam Umamaheswaran
SASTRA DEEMED UNIVERSITY
from 01/05/2026
to 30/06/2026
Mathématiques
Algebra, Homological Algebra, Representation Theory, and Number Theory
Ingram Patrick
York University
from 04/05/2026
to 27/06/2026
Mathématiques
Arithmetic dynamics, number theory
Stellari Paolo
Università degli Studi di Milano
from 04/05/2026
to 30/06/2026
Mathématiques
Algebraic Geometry, Homological Algebra, Derived Categories
Zaboronski Oleg
Department of Mathematics, University of Warwick
from 04/05/2026
to 26/06/2026
Mathématiques
Probability theory, interacting particle systems, random matrices, mathematical physics
Chekhov Leonid
MIchigan State University
from 05/05/2026
to 26/06/2026
Mathématiques
mathematical physics, topological recursion, moduli spaces of Riemann surfaces, quantization
Iliev Plamen
Georgia Institute of Technology
from 11/05/2026
to 13/06/2026
Mathématiques
integrable systems, hypergeometric functions, bispectrality, representation theory
Gralla Samuel
University of Arizona
from 11/05/2026
to 07/06/2026
Physique
General relativity
Matsui Hiroki
Department of Mathematical Sciences Faculty of Science and Technology, Tokushima University
from 17/05/2026
to 24/05/2026
Mathématiques
Algebraic Geometry, Category Theory, Commutative Algebra, Representation Theory
Celikbas Olgur
West Virginia University
from 17/05/2026
to 08/06/2026
Mathématiques
Homological Algebra, Commutative Algebra
Hoang Truong
Institute of mathematics, VAST
from 17/05/2026
to 07/06/2026
Mathématiques
Algebraic geometry, Computer algebra and Form proof
Goncharov Alexander
Yale University
from 01/06/2026
to 30/08/2026
Mathématiques
Arithmetic Algebraic Geometry
Raghuram Anantharam
Fordham University at Lincoln Center
from 01/06/2026
to 15/07/2026
Mathématiques
Special values of L-functions, Automorphic Forms, Cohomology of Arithmetic Groups
Wei Zhaoting
East Texas A&M University
from 02/06/2026
to 18/07/2026
Mathématiques
noncommutative geometry, higher category theory, representation theory
Kac Victor
MIT
from 08/06/2026
to 15/07/2026
Mathématiques
Algebra, Mathematical Physics
De Sole Alberto
Universita` di Roma La Sapienza
from 15/06/2026
to 15/07/2026
Mathématiques
Lie algebras, vertex algebras, integrable systems
Braverman Alexander
University of Toronto
from 15/06/2026
to 05/08/2026
Mathématiques
Representation theory, algebraic geometry, mathematical physics
Kapustin Anton
California Institute of Technology
from 20/06/2026
to 15/12/2026
Physique
Mathematical physics (quantum field theory and condensed matter)
Polishchuk Alexander
University of Oregon
from 01/07/2026
to 31/07/2026
Mathématiques
Algebraic geometry
Markarian Nikita
Université de Strasbourg
from 06/07/2026
to 29/08/2026
Mathématiques
Algebraic geometry, Algebraic topolgy
Garkusha Grigory
Swansea University
from 01/09/2026
to 20/09/2026
Mathématiques
Algebraic K-theory, motivic homotopy theory, algebraic geometry
Berean-Dutcher Jonah
University of British Columbia
from 01/09/2026
to 19/12/2026
Physique
Quantum Field Theory and Scattering Amplitudes
Bini Donato
Istituto per le Applicazioni del Calcolo
from 07/09/2026
to 18/09/2026
Physique
General Relativity
Samokhin Alexandre
Bielefeld University
from 07/09/2026
to 07/11/2026
Mathématiques
Théorie des représentations, géométrie algébrique
KOYAMA SHINYA
Toyo University
from 15/09/2026
to 15/11/2026
Mathématiques
Number Theory
Liu Bingyuan
The University of Texas Rio Grande Valley
from 28/09/2026
to 28/11/2026
Mathématiques
Complex Geometry and Several Complex Variables
Burelle Jean-Philippe
Université de Sherbrooke
from 01/10/2026
to 15/10/2026
Mathématiques
higher Teichmüller theory, character varieties, representations of discrete groups
Castet Nathan
Ecole Polytechnique
from 01/10/2026
to 30/09/2028
Physique
Physique théorique
Todjihounde Leonard
Institut de Mathematiques et de Sciences Physiques (IMSP)
from 01/10/2026
to 31/10/2026
Mathématiques
Structures et Analyse Géométriques
Nariman Sam
Purdue University
from 02/11/2026
to 31/01/2027
Mathématiques
Geometric topology
Bini Donato
Istituto per le Applicazioni del Calcolo
from 09/11/2026
to 20/11/2026
Physique
General Relativity
Baklouti Ali
Faculté des Sciences de Sfax
from 16/11/2026
to 18/12/2026
Mathématiques
Théorie des représentations, analyse harmonique et géométrique
Smith Graham
Pontifícia Universidade Católica do Rio de Janeiro
from 01/01/2027
to 31/03/2027
Mathématiques
Geometric Analysis
Goncharov Alexander
Yale University
from 01/01/2027
to 31/08/2027
Mathématiques
Arithmetic Algebraic Geometry
Garcia-Prada Oscar
ICMAT- Consejo Superior de Investigaciones Cientificas
from 04/01/2027
to 31/03/2027
Mathématiques
Complex algebraic geometry, differential geometry and math. physics
Bessonov Nikolay
Institute of Problems in Mechanical Engineering, Russian Academy of Sciences
from 01/02/2027
to 30/04/2027
Biologie
Computational biology, mathematical modelling in biology, mechanics, and physics.
Kaimanovich Vadim
University of Ottawa
from 03/05/2027
to 31/07/2027
Mathématiques
Dynamics and probability on geometrical and algebraic structures
Name Visit dates
Seraj Ali
Institute for Research in Fundamental Sciences (IPM), Teheran

Physique
Gravitational waves and black hole physics.
02/09/2025 - 18/10/2025

seraj(a)ihes.fr
Board BAML1 (26700)
Turbiner Alexander
Instituto de Ciencias Nucleares, UNAM

Physique
Theoretical and Mathematical Physics
13/10/2025 - 18/10/2025

turbiner(a)ihes.fr
Board 0N7 (26618)
Vologodsky Vadim
University of Chicago

Mathématiques
Algebraic Geoemtry, Number theory
06/10/2025 - 18/10/2025

vologodsky(a)ihes.fr
Board 1N13 (26675)
Burungale Ashay
UT Austin

Mathématiques
Number theory
18/08/2025 - 20/10/2025

burungale(a)ihes.fr
Board 0E2 (26651)
Fu Hao
McGill University

Mathématiques
Arithmetic geometry and number theory
01/09/2025 - 31/10/2025

fchmlfh(a)ihes.fr
Board 0S8 (26610)
Alpeev Andrei
currently none

Mathématiques
Ergodic theory, Probability, Functional analysis
30/09/2025 - 31/10/2025

alpeev(a)ihes.fr
Board 1N4 (26638)
Gonzales Vilcarromero Richard Paul
Pontificia Universidad Católica del Perú

Mathématiques
Equivariant intersection theory, cohomology and K-theory of spherical
01/09/2025 - 31/10/2025

rgonzalesv(a)ihes.fr
Board 1N14 (26678)
Gorski Alexandre
IITP RAS

Physique
Quantum field theory and its applications
03/10/2025 - 09/11/2025

agorsky(a)ihes.fr
Board 1N10 (26642)
Berean-Dutcher Jonah
University of British Columbia

Physique
Quantum Field Theory and Scattering Amplitudes
13/10/2025 - 14/12/2025

jbd(a)ihes.fr
Board 0S11 (26663)
Sadeghi Khouzani Somayeh
Institute for Research in Fundamental Sciences (IPM)

Mathématiques
Representation Theory of Algebras
22/09/2025 - 18/12/2025

sadeghi(a)ihes.fr
Board BAML11 (26711)
Gongopadhyay Krishnendu
Indian Institute of Science Education and Research (IISER) Mohali

Mathématiques
Hyperbolic geometry, geometric group theory, Reversibility in geometry
08/09/2025 - 04/01/2026

krishnendu(a)ihes.fr
Board BAML2 (26701)
Koshevoy Gleb
IITP RAS

Mathématiques
Combinatoire
01/10/2025 - 01/02/2026

koshevoy(a)ihes.fr
Avec le soutien du Fonds Huawei Technologies à l'IHES
Thaler Jesse
Titulaire Chaire Schlumberger
Massachusetts Institute of Technology

Physique
Theoretical Particle Physics
27/08/2025 - 31/07/2026

jthaler(a)ihes.fr
Board BAML3 (26702)
Chaire Schlumberger pour les sciences mathématiques
Headrick Matthew
Brandeis University

Physique
Mathematical physics. String theory.
03/09/2025 - 30/08/2026

headrick(a)ihes.fr
Board 0S5 (26616)
Simons Sabbatical Support
Penner Robert
Titulaire Chaire Schlumberger
California Institute of Technology

Mathématiques
Geometry, physics, biology
23/05/2025 - 31/08/2026

rpenner(a)ihes.fr
Board 1N9 (26641)
Chaire Schlumberger pour les sciences mathématiques
Mazáč Dalimil
IPhT

Physique
Quantum field theory and its interplay with mathematics
02/09/2025 - 31/08/2026

mazac(a)ihes.fr
Board 1N12 (26674)
Dramé Oumarou
Université Paris-Saclay

Mathématiques
03/09/2025 - 31/08/2026

oumarou(a)ihes.fr
Board 0N0 (26683)
Szeftel Jérémie
CNRS-Laboratoire Jacques-Louis Lions

Mathématiques
02/09/2022 - 31/08/2027

szeftel(a)ihes.fr
Board 0N9 (26620)