A remark on Schrödinger operators
- Cite this article as:
- Bourgain, J. Israel J. Math. (1992) 77: 1. doi:10.1007/BF02808007
- 183 Downloads
We study the almost everythere convergence to the initial dataf(x)=u(x, 0) of the solutionu(x, t) of the two-dimensional linear Schrödinger equation Δu=iϖtu. The main result is thatu(x, t) →f(x) almost everywhere fort → 0 iff ∈Hp(R2), wherep may be chosen <1/2. To get this result (improving on Vega’s work, see ), we devise a strategy to capture certain cancellations, which we believe has other applications in related problems.