Abstract
We analyze the perturbed Klein-Gordon Cauchy problem in two space dimension, studying the limit of mass decreasing to zero. We prove a global existence result when the initial data are small and the nonlinearity is at least quadratic near the origin.
Citation
Fabio Catalano. "The nonlinear Klein-Gordon equation with mass decreasing to zero." Adv. Differential Equations 7 (9) 1025 - 1044, 2002. https://doi.org/10.57262/ade/1367241458
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