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.
Associated professorships 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.


The Université de Cergy-Pontoise – IHES Chair in Analysis

This chair was created in 2009 with the Université Cergy-Pontoise.

  • Frank Merle -IHES

    Frank Merle, mathematician

    Chair in Analysis

    Frank Merle is studying the singularities of non-linear partial differential equations. He is a member at Université de Cergy-Pontoise of the CNRS "Analysis, geometry and modelization" lab (UMR 8088). His research themes arise out of hard analysis and have an important impact on mathematical physics.­­

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.

  • Raymond E. Goldstein, physicist

    Schlumberger Chair for mathematical sciences

    Ray Goldstein is the Schlumberger Professor of Complex Physical Systems in the Department of Applied Mathematics and Theoretical Physics of the University of Cambridge. He holds the Schlumberger Chair in 2017. His research interests span from statistical physics to nonlinear dynamics and geophysics, with particular emphasis on biological physics, both theoretical and experimental.

  • Annick Harel-Bellan, biologist

    Schlumberger Chair for mathematical sciences

    research director at CNRS. She was the director of the Integrative Biology and Molecular Genetics (SBI-GeM) unit at CEA, in which she led the Epigenetics and Cancer lab and the Epigenetic Aspects of Cell Proliferation and Differentiation team.

  • Nader Masmoudi, Mathematician

    Schlumberger Chair for Mathematical Sciences

    Nader Masmoudi is a professor of mathematics at the Courant Institute of Mathematical Sciences at the University of New York since 2008. He moved to France to study mathematics first at Ecole Normale Superieure, and later on at université Paris-Dauphine, where he obtained his PhD under the supervision of Pierre-Louis Lions, working on asymptotic problems in fluid mechanics.

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.

  • Spencer J. Bloch- IHES

    Spencer J. Bloch­, mathematician

    Israel Gelfand Chair

    Spencer J. Bloch is R.M. Hutchins Distinguished Service Professor Emeritus in the Mathematics Department of the University of Chicago.

  • Francis Brown - IHES

    Francis Brown, mathematician

    Israel Gelfand Chair

    Francis Brown is a Research Fellow at the All Souls College in Oxford University since September 2015. Before that he was a CNRS Researcher at IHES.

  • Dennis Gaitsgory, Mathematician

    Israel Gelfand Chair

    Dennis Gaitsgory is a professor of mathematics at Harvard University, known for his research on the geometric Langlands program. He studied at Tel Aviv University under Joseph Bernstein (1990-1996) and received his doctorate in 1997. Prior to his 2005 appointment at Harvard he was an associate professor at the University of Chicago from 2001–2005.

  • Sergiu Klainerman, mathematician

    Israel Gelfand Chair of mathematics

    mathematician at Princeton University (USA). An analyst of partial differential equations, he works on general relativity. His current research is directed at the mathematical theory of black holes. He also works on the dynamical formation of trapped surfaces and singularities.

  • Samson Shatashvili - IHES

    Samson Shatashvili, physicist

    Israel Gelfand Chair

    Samson Shatashvili is the director of the Hamilton Mathematical Institute at the Trinity College, Dublin where he holds the University Chair of Natural Philosophy (1847). He was holder of the Louis Michel Chair at IHES from 2003 to 2013.

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.

  • Ali H. Chamsedine - IHES

    Ali H. Chamseddine, physicist

    Chaire Louis Michel

    Ali H. Chamseddine is Professor at the American University of Beirut, holder of the Louis Michel Chair since 2009.

  • Eliezer Rabinovici - IHES

    Eliezer Rabinovici, physicist

    Louis Michel Chair

    Eliezer Rabinovici is Leon H. and Ada G. Miller professor at the Racah Institute of Physics, The Hebrew University of Jerusalem, and holds the Louis Michel Chair at IHES since September 2015. His area of research is theoretical high-energy physics, in particular quantum field theory and string theory.

René Thom Chair supported by the Simons Fund for Biology

This chair was created in 2013 in honour of René Thom, a mathematician and permanent professor at IHES from 1963 to 1990. It is funded by the Simons Fund for Biology at IHES and supports a researcher and their team, working on theoretical biology.

  • Robert C. Penner

    Robert C. Penner, mathematician

    René Thom Chair

    Robert C. Penner is Visiting Researcher at the University of California, Los Angeles, Centre Distinguished Professor, Centre for the Quantum Geometry of Moduli Spaces, Aarhus University, Visiting Professor at Max-Planck Institut für Mathematik in Bonn and at University of Tokyo.

Name Date Research field
Yadin Ariel
Ben-Gurion University of the Negev
from 17/02/2018
to 23/02/2018
Kundu Sandipan
Johns Hopkins University
from 19/02/2018
to 09/03/2018
Theoretical high energy physics
Bessonov Nikolay
Russian Academy of Sciences
from 19/02/2018
to 19/05/2018
Computational biology, mathematical modelling in biology, mechanics, and physics
Gough John
Aberystwyth University
from 01/03/2018
to 13/07/2018
Quantum Engineering Control Quantum Feedback and Network Modelling Quantum Probability and Stochastic Analysis
Graf Gian Michele
ETH Zürich, Institute of Theoretical Physics
from 01/03/2018
to 31/05/2018
Mourrat Jean-Christophe
from 04/03/2018
to 09/03/2018
Penner Robert
California Institute of Technology
from 08/03/2018
to 30/09/2018
Geometry, physics, biology
Shatashvili Samson
School of Mathematics
from 21/03/2018
to 08/04/2018
Theoretical and Mathematical Physics
Brown Francis
University of Oxford
from 25/03/2018
to 16/04/2018
Gaiko Valery
United Institute of Informatics Problems, National Academy of Sciences of Belarus
from 01/04/2018
to 31/05/2018
Bifurcation Theory of Dynamical Systems
Sevastyanov Alexey
University of Aberdeen
from 01/04/2018
to 30/06/2018
Algebra, representation theory, mathematical physics
Buium Alexandru
University of New Mexico, Department of Math and Stat
from 01/04/2018
to 31/05/2018
Geometrie arithmetique
Pandit Pranav
University of Vienna
from 01/04/2018
to 28/06/2018
Quantum Gravity/Geometry, Homotopical Mathematics
Desy theory
from 02/04/2018
to 16/04/2018
Quantizatio of Teaichmueller spaces
Chrusciel Piotr
University of Vienna
from 04/04/2018
to 31/05/2018
Relativité Générale
Moosa Rahim
University of Waterloo
from 06/04/2018
to 01/07/2018
Model theory (a branch of mathematical logic). Especially interactions with algebra and geometry.
Patnaik Manish
University of Alberta
from 16/04/2018
to 16/06/2018
Automorphic forms, infinite-dimensional Lie algebras and groups
Nisse Mounir
School of Mathematics, Korea Institute for Advanced Study
from 01/05/2018
to 31/07/2018
Complex and Tropical Algebraic Geometry
Sapir Mark
Vanderbilt University
from 01/05/2018
to 30/06/2018
Combinatorial algebra
Kaufmann Ralph
Purdue University, Department of Mathematics
from 01/05/2018
to 31/07/2018
Algebraic Geometry, Algebraic Topology, Mathematical Physics
Bhagwat Chandrasheel
Indian Institute of Science Education and Research Pune
from 01/05/2018
to 31/05/2018
Representation Theory, Automorphic Forms, Special Values of L-functions
Rabinovici Eliezer
Racah Institute
from 01/05/2018
to 31/07/2018
High Energy Physics
Harris Michael
Institut de Mathématiques de Jussieu
from 01/05/2018
to 31/05/2018
Masmoudi Nader
Courant Institute of Mathematical Science
from 02/05/2018
to 31/07/2018

Gaitsgory Dennis
Harvard University
from 05/05/2018
to 06/06/2018
Geometric Representation Theory
Zheng Weizhe
Chinese Academy of Sciences
from 01/06/2018
to 18/06/2018
géométrie algébrique
Chamseddine Ali
American University of Beirut
from 01/06/2018
to 31/08/2018
Physique Mathématique
Saito Takeshi
School of Sciences, the University of Tokyo
from 02/06/2018
to 01/07/2018
Arithmetic Geometry
Vasiu Adrian
SUNY Binghamton
from 10/06/2018
to 20/07/2018
Arithmetic Algebraic Geometry
Gaitsgory Dennis
Harvard University
from 10/06/2018
to 10/08/2018
Geometric Representation Theory
Borodin Alexei
from 18/06/2018
to 22/07/2018
Integrable Probability
Khesin Boris
University of Toronto
from 01/07/2018
to 31/08/2018
infinite-dimensional groups, mathematical hydrodynamics, Hamiltonian systems, integrable systems
Brown Francis
University of Oxford
from 08/07/2018
to 01/09/2018
Faraji Astaneh Amin
Institute for Research in Fundamental Sciences (IPM)
from 15/08/2018
to 15/09/2018
Theoretical High Energy Physics including Classical Gravity, Quantum Field Theory, String Theory and Gauge-Gravity Duality, Entanglement Entropy in Field theory and Holography
Name Visit dates
Deffayet Cédric
Institut d'Astrophysique de Paris

06/11/2013 - 05/11/2018

Board ON7 (26618)
Guignard Quentin
Doctorant ENS Paris

Géométrie d'Arakelov
22/09/2014 - 03/09/2018

Board 1E4 (26653)
Ren Jinbo
Doctorant Université Paris-Saclay

Géométrie arithmétique
06/10/2015 - 31/08/2018

Board 1E7 (26650)
Kropp Jérémie

Biologie cellulaire et moléculaire, Biologie théorique
01/07/2016 - 30/06/2018

Board 1S7 (26659)
Grivaux Julien
Institut de Mathématiques de Marseille

Géométrie Algébrique
01/08/2016 - 01/08/2018

Board 1N11 (26643)
Elliott Christopher
Northwestern University

Mathematical physics and derived algebraic geometry, in particular constructing mathematical models for supersymmetric field theories, and applications to geometric representation theory.
01/09/2016 - 31/08/2019

Board ON6 (26617)
Institut de Mathématiques de Jussieu

Valeurs spéciales de fonctions L, périodes automorphes, périodes motiviques
01/09/2016 - 31/08/2018

Board OE5 (26624)
Diemer Colin
University of Alberta

Birational Geometry and Mirror Symmetry
01/09/2016 - 31/08/2018

Board 1N5 (26640)
Raoufi Aran
Université de Genève

Probability theory and mathematical physics.
01/09/2016 - 31/08/2018

Board OE6 (26623)
Kavanagh Chris
University College Dublin

General Relativity, black hole perturbation theory, gravitational self-force.
02/09/2016 - 31/08/2018

Board 1N12 (26674)
Morozova Nadya

Theoretical Biology, Math Biology, and Systems Biology
04/09/2016 - 04/09/2018

Board 1E2 (26649)
Vlassopoulos Ioannis
University of Vienna

Moduli spaces of Riemann surfaces, Formal non-commutative geometry, Gromov-Witten theory, Loop spaces, Mirror Symmetry, topological String theory.
01/10/2016 - 30/09/2018

Board 1E1 (26696)
Frassek Rouven
Durham University

Integrable models; Integrable structures in gauge theories; AdS/CFT;
29/10/2016 - 31/10/2018

Board ON8 (26619)
Soibelman Yan
Kansas State University

Algebra,Geometry, Mathematical physics
02/05/2017 - 31/08/2018

Board 1N14 (26678)
Garcia Luis
University of Toronto

Automorphic forms, locally symmetric spaces
12/07/2017 - 09/07/2018

Board OS8 (26610)
Burelle Jean-Philippe
University of Maryland

Geometric structures and higher teichmueller theory.
01/09/2017 - 31/08/2018

Board 1E11 (26695)
Su Changjian
Columbia University

representation theory, algebraic geometry, geometric Langlands
01/09/2017 - 31/08/2018

Board OS6 (26627)
Di Nezza Eleonora
Imperial College London

Complex and differential geometry
04/09/2017 - 31/08/2018

Board OS7 (26692)
Zhou Peng
Northwestern University

I use microlocal analysis, both the algebraic and the analytic versions, to geometric problems in mirror symmetry and spectral theory.
04/09/2017 - 31/08/2019

Board 1N14 (26678)
Horesh Tal

Applications of homogeneous dynamics to number theory Lattices in Lie groups Hyperbolic geometry
04/09/2017 - 31/08/2018

Board 1S3 (26687)
Bardet Ivan
Institut Camille Jordan

mathematical physics, probabitily theory, functional analysis and operator space theory. Non-commutative functional inequalities and quantum noises
04/09/2017 - 31/08/2018

Board IHP ()
Goswami Subhajit
Institut des Hautes Etudes Scientifiques

Probability Theory.
11/09/2017 - 31/08/2019

Board OS10 (26622)
Babadjian Jean-François
Université Paris Sud

19/09/2017 - 31/08/2018

Board 1S9 (26661)
Massot Patrick
Université Paris Sud

Topologie Symplectique
25/09/2017 - 31/08/2018

Board 1S9 (26661)
Yao Ningyuan
Fudan University

Model Theory, Definable Topological Dynamics in NIP theories, especially the o-minimal theories and theory of p-adics.
29/09/2017 - 30/09/2018

Board OE2 (26651)
Bhattacharya Gourab
Information Retrieval Society of India

Symétrie Miroir Homologique (Homological Mirror Symmetry)
01/10/2017 - 30/09/2020

Board 1E7 (26650)
Terburg Cathelijne

Quantum Field Theory
10/10/2017 - 09/10/2020

Trevisani Emilio
Centro de Fisica do Porto

Conformal field theory
10/10/2017 - 09/10/2020

Board OS10 (26622)
Severo Franco

10/10/2017 - 10/10/2020

Board OS10 (26622)
Kaviraj Apratim
Indian Institute of Science

Theoretical physics
26/10/2017 - 26/10/2019

Board OS6 (26627)
Yao Yi-Jun

Noncommutative Geometry
15/12/2017 - 15/06/2018

Board OS9 (26614)
Koshevoy Gleb

31/12/2017 - 31/03/2018

Board 1N9 (26641)
Moosa Rahim
University of Waterloo

Model theory (a branch of mathematical logic). Especially interactions with algebra and geometry.
02/01/2018 - 05/04/2018

Board IHP ()
van Suijlekom Walter
Radboud University

Noncommutative geometry, gauge theory, particle physics
03/01/2018 - 05/05/2018

Board 1N13 (26675)
Capdeboscq Inna
University of Warwick

Group Theory
08/01/2018 - 08/04/2018

Board ON9 (26620)
Gorsky Mikhail
Max Planck Institute for Mathematics

Representation theory, quantum groups, algebraic combinatorics
08/01/2018 - 25/02/2018

Board OE1 (26662)
Sustretov Dmitry
Laboratoire Paul Painlevé, UMR CNRS 8524, Université Lille 1

Algebraic geometry, complex geometry, non-archimedean geometry, model theory
08/01/2018 - 25/02/2018

Board OE1 (26662)
Moschella Ugo
Universita dell'Insubria

Physique mathématique
10/01/2018 - 22/04/2018

Board 1E9 (26699)
Saponov Pavel
Institute for High Energy Physics

Quantum algebra, noncommutative geometry, integrable models of mathematical physics
16/01/2018 - 12/02/2018

Board ON10 (26628)
Wilms Robert
University of Mainz

Arakelov Theory
17/01/2018 - 17/04/2018

Board 1N10 (26642)
Caramello Olivia
Università degli Studi dell'Insubria

Topos theory and its applications
22/01/2018 - 15/04/2018

Spindel Philippe
Université de Mons

29/01/2018 - 28/04/2018

Board 1N1 (26636)
Moya Giusti Matias Victor
Max Planck Institute for Mathematics

I study the existence of ghost classes in the cohomology of Shimura varieties and the description of their weights in the corresponding mixed Hodge structure. I also study, in particular, the middle weight property.
01/02/2018 - 31/05/2018

Board 1N2 (26637)
Sokolov Vladimir
Landau Institute for Theoretical Physics

Integrable models
02/02/2018 - 30/04/2018

Board 1N2 (26637)
Nikolov Nikolay
Institute for Nuclear Research and Nuclear Energy

Mathematical and Theoretical Physics
12/02/2018 - 25/02/2018

Board ON1 (26615)
Burger Marc
ETH Zurich, Departement Mathematik

Discrete subgroups of Lie groups
12/02/2018 - 17/02/2018

Board 1S4 (26656)
Meineri Marco

Defect conformal field theory, Entanglement, Effective field theory for confining flux tubes
12/02/2018 - 25/02/2018

Board 1E8 (26646)
Templier Nicolas
Cornell University

Number theory, automorphic forms, representation theory
14/02/2018 - 16/07/2018

Board ON10 (26628)