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• W1732839353 abstract "The aim of this study is to give complete semiclassical asymptotics of the residues Res(S(,!,! 0 ),) at some pole of the distributional kernel of the scattering matrix S() corresponding to a semiclassical two-body Schrodinger operator P = h 2 Δ +V , and considered as a meromorphic operator-valued function with respect to the energy . We do it in the case where the pole considered is a shape resonance of P. This is a continuation of A. Benbernou, Estimation des residus de la matrice de diffusion associes a des resonances de forme I (to appear in Ann. Inst. H. Poincare), where an extra geometrical condition was assumed (namely the absence of caustics near the energy level Re). Here we drop this assumption by using an FBI transform which permits to work in the complexified phase space. Then we show that some semiclassical WKB expansions are global, and this allows us to find out estimates for the residue of the type O( h N e 2S 0=h ), whereS0 is the Agmon width of the potential barrier, and N may be arbitrarily large depending on an explicit geometrical location of the incoming and outgoing waves! and! 0 one consider. Full asymptotic expansions are obtained under some additional generic geometric assumption on the potential V." @default.
• W1732839353 created "2016-06-24" @default.
• W1732839353 creator A5026169193 @default.
• W1732839353 creator A5035149923 @default.
• W1732839353 date "1999-01-01" @default.
• W1732839353 modified "2023-09-23" @default.
• W1732839353 title "Semiclassical asymptotics of the residues of the scattering matrix for shape resonances" @default.
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