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math-ph2004
Accurate estimates for magnetic bottles in connection with superconductivity
S. Fournais, B. Helffer
Motivated by the theory of superconductivity and more precisely by the problem of the onset of superconductivity in dimension two, many papers devoted to the analysis in a semi-cla…
math.SP2004
Nodal domains a la Courant
A. Ancona, B. Helffer, T. Hoffmann-Ostenhof
Let $H(\Om_0)=-Δ+V$ be a Schrödinger operator on a bounded domain $\Om_0\subset \mathbb R^d$ with Dirichlet boundary conditions. Suppose that the $\Om_\ell$ (…