The French-German workshop "Asymptotic analysis and spectral theory" (Aspect'15) will take place at the University Paris-Sud, Orsay, France, on October 5-7, 2015. We continue the series of meetings started in 2012 (link:  previous conference in Mainz). This edition is organised by Patrick Joly (webpage), Konstantin Pankrashkin (webpage), Olaf Post (webpage) and Julien Sabin (webpage). The topics include the spectral problems in wave propagation and related areas in the operator theory and in the analysis of partial differential equations.
The meeting is supported by the Deutsch-Französische Hochschule, the Fondation mathématique Jacques Hadamard, the INRIA and the University Paris-Sud.

Young participants from the French institutions can be supported through the GDR EDP and GDR DYNQUA.

Poster of the meeting: pdf


Update (2017) The third edition is being organized in Trier,



  • Colette Anné (CNRS & University of Nantes): Resolution blowup for conical singularities
  • Diana Barseghyan (University of Ostrava): Semiclassical bounds in magnetic bottles [pdf of the talk]
  • Virginie Bonnaillie-Noël (CNRS & ENS Paris): Nodal and spectral minimal partitions [pdf of the talk]
  • Lucas Chesnel (Ecole Polytechnique, Palaiseau): A curious spectral behavior for a problem of rounded corner in presence of negative material [pdf of the talk]
  • Monique Dauge (CNRS & University of Rennes 1): Perturbation of the Cosserat spectrum [pdf of the talk]
  • Erwan Faou (INRIA & ENS Rennes & ENS Paris): Free vibrations of axisymmetric shells: parabolic and elliptic cases [pdf of the talk]
  • Daniel Grieser (University of Oldenburg): Eigenvalues for adiabatic problems with isolated singular fibre
  • Rainer Hempel (Braunschweig University of Technology): L1 estimates for eigenfunctions of the Dirichlet Laplacian and the asymptotic behavior of the heat content
  • Vadim Kostrykin (University of Mainz): The div M grad without ellipticity: A quadratic form approach
  • Andrii Khrabustovskyi (Karlsruhe Institute of Technology): Spectral properties of periodic Schrödinger operators with δ'-potentials [pdf of the talk]
  • Stanislas Kupin (University of Bordeaux 1): Recent advances on the distribution of the discrete spectrum of non-selfadjoint perturbations of certain operators from mathematical physics [pdf of the talk]
  • Corentin Léna (University of Turin): Nodal patterns of the Laplacian on thin domains [pdf of the talk]
  • Andrea Mantile (University of Reims): Selfadjoint elliptic operators with boundary conditions on not closed hypersurfaces
  • Delio Mugnolo (Hagen): Isoperimetric inequalities and spectral properties of the discrete p-Laplacian [pdf of the talk]
  • Sergei A. Nazarov (Institute for Problems in Mechanical Engineering, Saint Petersburg): Picturing rough boundaries smoothly
  • Nicolas Popoff (University of Bordeaux 1): Eigenvalues of Robin Laplacians: Influence of the geometry and reduction to the boundary [pdf of the talk]
  • Albrecht Seelmann (University of Mainz): On the subspace perturbation problem
  • Carsten Trunk (Ilmenau University of Technology): Indefinite Sturm-Liouville operators [pdf of the talk]
  • Christoph Übersohn (University of Mainz): On the difference of spectral projections
  • Elizaveta Vasilevskaya (University Paris-13 & ENSTA, Palaiseau): Guided modes in ladder-like open periodic waveguides [pdf of the talk]


  • Maxime Ingremeau: Ondes planes tordues en courbure nonpositive 
  • Nassima Khaldi: On the spectral boundary value problems and boundary approximate controllability of linear systems
  • Elong Ouissam: Lp boundedness of Fourier integral operators


Preliminary schedule

PDF (last update: September 29)



Travel and accommodation

Please check the information on travel and accommodation.