Blow up of fractional Schrödinger equations on manifolds with nonnegative Ricci curvature

Abstract

In this paper, the well-posedness of Cauchy's problem of fractional Schrödinger equations with a power type nonlinearity on $n$-dimensional manifolds with nonnegative Ricci curvature is studied. Under suitable volume conditions, the local solution with initial data in $H^{[\frac{n}{2}]+1}$ will blow up in finite time no matter how small the initial data is, which follows from a new weight function and ODE inequalities. Moreover, the upper-bound of the lifespan can be estimated.

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