1. Recherche
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hal-01052647v1  Pré-publication, Document de travail
Bernard Helffer, Philippe Kerdelhué, Jimena Royo-Letelier. Chambers's formula for the graphene and the Hou model with kagome periodicity and applications.
2014
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hal-01427360v1  Pré-publication, Document de travail
Philippe Charron, Bernard Helffer, Thomas Hoffmann-Ostenhof. Pleijel's theorem for Schrödinger operators with radial potentials
2017
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cel-00376427v1  Cours
Bernard Helffer. Introduction to semi-classical methods for the Schrödinger operator with magnetic field
3rd cycle. Damas (Syrie), 2004, pp.93
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hal-01429830v1  Pré-publication, Document de travail
Bernard Helffer, Rola Kiwan. Dirichlet eigenfunctions in the cube, sharpening the Courant nodal inequality
2017
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hal-01061738v1  Pré-publication, Document de travail
Pierre Bérard, Bernard Helffer. On the number of nodal domains of the 2D isotropic quantum harmonic oscillator -- an extension of results of A. Stern
IF_PREPUB. 2014
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inria-00520773v2  Pré-publication, Document de travail
Taous-Meriem Laleg-Kirati, Bernard Helffer. On semi-Classical Questions Related to Signal Analysis
2010
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hal-01456380v1  Pré-publication, Document de travail
Denis Grebenkov, Bernard Helffer, Raphael Henry. THE COMPLEX AIRY OPERATOR ON THE LINE WITH A SEMI-PERMEABLE BARRIER
2017
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hal-01456383v1  Pré-publication, Document de travail
Denis Grebenkov, Bernard Helffer. ON SPECTRAL PROPERTIES OF THE BLOCH-TORREY OPERATOR IN TWO DIMENSIONS
2017
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hal-01435161v1  Article dans une revue
Bernard Helffer, Mikael Sundqvist. NODAL DOMAINS IN THE SQUARE—THE NEUMANN CASE
Moscow mathematical journal, 2015, 15 (3), pp.455-495
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hal-01435147v1  Pré-publication, Document de travail
Bernard Helffer, Ayman Kachmar. DECAY OF SUPERCONDUCTIVITY AWAY FROM THE MAGNETIC ZERO SET
2017
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hal-01435168v1  Pré-publication, Document de travail
Bernard Helffer, Mikael Sundqvist. ON THE SEMI-CLASSICAL ANALYSIS OF THE GROUNDSTATE ENERGY OF THE DIRICHLET PAULI OPERATOR
2017
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hal-00863056v1  Article dans une revue
Karine Beauchard, Bernard Helffer, Raphael Henry, Luc Robbiano. Degenerate parabolic operators of Kolmogorov type with a geometric control condition.
(submitted), 2013, pp.(submitted)
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hal-01431704v1  Article dans une revue
Bernard Helffer, Konstantin Pankrashkin. Tunneling between corners for Robin Laplacians
Journal of the London Mathematical Society, London Mathematical Society, 2015, 91, pp.225 - 248. <10.1112/jlms/jdu070>
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hal-00980575v2  Article dans une revue
Bernard Helffer, Konstantin Pankrashkin. Tunneling between corners for Robin Laplacians
Journal of the London Mathematical Society, London Mathematical Society, 2015, 91 (1), pp.225-248. <10.1112/jlms/jdu070>
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hal-01244630v2  Pré-publication, Document de travail
Pierre Bérard, Bernard Helffer. The weak Pleijel theorem with geometric control
IF_PREPUB. Revised Oct. 12, 2016. To appear in Journal of Spectral Theory 6 (2016). 2015
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hal-00951531v4  Pré-publication, Document de travail
Pierre Bérard, Bernard Helffer. Dirichlet eigenfunctions of the square membrane: Courant's property, and A. Stern's and Å. Pleijel's analyses
IF_PREPUB. To appear in Springer Proceedings in Mathematics & Statistics (2015), MIMS-GGTM conference in me.. 2015
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hal-01434780v1  Pré-publication, Document de travail
Bernard Helffer, Ayman Kachmar. THE DENSITY OF SUPERCONDUCTIVITY IN THE BULK REGIME
2017
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hal-01434777v1  Pré-publication, Document de travail
Horia Cornean, Bernard Helffer, Radu Purice. Low lying spectral gaps induced by slowly varying magnetic fields
2017
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hal-01120958v3  Pré-publication, Document de travail
Pierre Bérard, Bernard Helffer. Courant-sharp eigenvalues for the equilateral torus, and for the equilateral triangle
IF_PREPUB. Slight modifications and some misprints corrected. 2015
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hal-01026363v4  Pré-publication, Document de travail
Pierre Bérard, Bernard Helffer. A. Stern's analysis of the nodal sets of some families of spherical harmonics revisited
IF_PREPUB. Accepted for publication in "Monatshefte für Mathematik". 2015
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hal-01431631v1  Article dans une revue
Bernard Helffer, Mikael Sundqvist. On nodal domains in Euclidean balls
Proceedings of the American Mathematical Society, American Mathematical Society, 2016, 144, pp.4777 - 4791. <10.1090/proc/13098>
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hal-01519629v1  Pré-publication, Document de travail
Pierre Bérard, Bernard Helffer. On Courant's nodal domain property for linear combinations of eigenfunctions
IF_PREPUB. 2017
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hal-01160620v2  Pré-publication, Document de travail
Pierre Bérard, Bernard Helffer. Some nodal properties of the quantum harmonic oscillator and other Schrödinger operators in $\mathbb{R}^2$
IF_PREPUB. Title changed. Contents revised. To appear in the Proceedings of the Séminaire de mathématiques s.. 2017
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hal-01541645v1  Pré-publication, Document de travail
Pierre Bérard, Bernard Helffer. STURM'S THEOREM ON ZEROS OF LINEAR COMBINATIONS OF EIGENFUNCTIONS
IF_PREPUB. 2017
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hal-00323849v1  Pré-publication, Document de travail
Virginie Bonnaillie-Noël, Bernard Helffer, Thomas Hoffmann-Ostenhof. On spectral minimal partitions II, the case of the rectangle
Article paru dans la revue Journal of Physics A: Mathematical and Theoretical (2009, vol 42, n°18.. 2008
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hal-00002744v1  Pré-publication, Document de travail
Francis Nier, Bernard Helffer. Quantitative analysis of metastability in reversible diffusion processes via a Witten complex approach: the case with boundary.
04-40. Prépublication 04-40, IRMAR, UMR-CNRS 6625, Université de Rennes 1 (Août 2004). 2004
hal-00961299v1  Article dans une revue
Virginie Bonnaillie-Noël, Bernard Helffer. On spectral minimal partitions: the disk revisited.
Annals of the University of Bucharest. Mathematical series, București : Editura Universității din București, 2013, 4 (LXII) (1), pp.321-342
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hal-00150455v1  Article dans une revue
Virginie Bonnaillie-Noël, Bernard Helffer, Grégory Vial. Numerical simulations for nodal domains and spectral minimal partitions
ESAIM. Contrôle, optimisation et calcul des variations, EDPSciences, 2010, 16 (1), pp.221-246
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hal-00001236v1  Pré-publication, Document de travail
Bernard Helffer, Markus Klein, Francis Nier. Quantitative analysis of metastability in reversible diffusion processes via a Witten complex approach
2004
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