کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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4589704 | 1334900 | 2015 | 42 صفحه PDF | دانلود رایگان |
We prove a unique continuation from infinity theorem for regular waves of the form [□+V(t,x)]ϕ=0[□+V(t,x)]ϕ=0. Under the assumption of no incoming and no outgoing radiation on specific halves of past and future null infinities, we show that the solution must vanish everywhere. The “no radiation” assumption is captured in a specific, finite rate of decay which in general depends on the L∞L∞-profile of the potential VV. We show that the result is optimal in many regards. These results are then extended to certain power-law type nonlinear wave equations, where the order of decay one must assume is independent of the size of the nonlinear term. These results are obtained using a new family of global Carleman-type estimates on the exterior of a null cone. A companion paper to this one explores further applications of these new estimates to such nonlinear waves.
Journal: Journal of Functional Analysis - Volume 269, Issue 11, 1 December 2015, Pages 3458–3499