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We study resonances for the generator of a diffusion with small noise in R(d) : L = -∈∆ + ∇F * ∇, when the potential F grows slowly at infinity (typically as a square root of the norm). The case when F grows fast is well known, and under suitable conditions one can show that there exists a family of exponentially small eigenvalues, related to the wells of F. We show that, for an F with a slow growth, the spectrum is R+, but we can find a family of resonances whose real parts behave as the eigenvalues of the "quick growth" case, and whose imaginary parts are small.
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Belastung und Arbeitsfähigkeit des Europäischen Gerichtshofs für Menschenrechte: neuere Entwicklungen - Extraterritoriale Anwendbarkeit der Rassendiskriminierungskonvention - Globale Verantwortlichkeit oder traditionelles Souveränitätsdenken – Gründe für die Haltung zur “Responsibility to Protect” von nicht-westlichen Staaten