01-104 Lahmar-benbernou A., Martinez A.
On Helffer-Sj\"ostrand's Theory of Resonances (47K, LATeX 2e) Mar 19, 01
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Abstract. We construct a simplified version of the microlocal theory of resonances given by B. Helffer and J. Sj\"ostrand in \cite{HeSj1}. This new version is based on elementary microlocal exponential estimates, and permits to recover their main results without the use of their special pseudodifferential calculus and Fourier-integral operators.

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