Abstract
The wave and scattering operators for the equation
withm>0 and λ>0 on four-dimensional Minkowski space are analytic on the space of finite-energy Cauchy data, i.e.L 12 (R 3)⊕L 2(R 3).
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Communicated by A. Jaffe
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Kumlin, P. Analyticity of the scattering operator for the nonlinear Klein-Gordon equation with cubic nonlinearity. Commun.Math. Phys. 144, 257–278 (1992). https://doi.org/10.1007/BF02101092
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DOI: https://doi.org/10.1007/BF02101092