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arXiv 1407.8528math.APmath.FA
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半线性薛定谔方程的奇性传播

Propagation of singularities for semilinear Schrödinger equations

Fabio Nicola, Luigi Rodino

摘要:

本文研究了具有二次哈密顿量的半线性薛定谔方程,特别是半线性谐振子的奇性奇性传播。我们证明了传播仍然发生沿流动的哈密顿流,但对Sobolev在一定范围内,并提供了Sobolev-波前集的概念是方便的修改。证明利用了一个加权版本的paradiomatic微积分,适应我们的情况。这些结果可以看作是半线性双曲型方程的薛定谔对应结果,它与通常的波前集一致。

英文摘要:

We study the propagation of singularities for semilinear Schrodinger equations with quadratic Hamiltonians, in particular for the semilinear harmonic oscillator. We show that the propagation still occurs along the flow the Hamiltonian flow, but for Sobolev regularities in a certain range and provided the notion of Sobolev-wave front set is conveniently modified. The proof makes use of a weighted version of the paradifferential calculus, adapted to our situation. The results can be regarded as the Schrodinger counterpart of those known for semilinear hyperbolic equations, which hold with the usual wave front set.

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