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arXiv 1010.2137math.APmath.CA
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Damek-Ricci空间上的薛定谔方程

Schrödinger equation on Damek-Ricci spaces

Jean-Philippe Anker, Vittoria Pierfelice, Maria Vallarino

摘要:

本文考虑Damek-Ricci空间上的Laplace-Beltrami算子Δ,当τ \in C* 满足Re(τ)\geq 0.当τ \in iR* 时,我们特别获得了与Δ相关的薛定谔核的逐点估计。然后,我们证明了薛定谔方程的Schihartz估计,对于一个家庭的容许对大于在欧几里德的情况下。这推广了Anker和Pierfelice关于实双曲空间的结果。作为进一步的应用,我们研究了Damek-Ricci空间上与一个特殊Laplacian算子相关联的薛定谔方程的色散性质,表明在这种情况下,标准色散估计失败,而适当的加权Schohartz估计成立。

英文摘要:

In this paper we consider the Laplace-Beltrami operator Δon Damek-Ricci spaces and derive pointwise estimates for the kernel of exp(τΔ), when τ\in C* with Re(τ) \geq 0. When τ\in iR*, we obtain in particular pointwise estimates of the Schrödinger kernel associated with Δ. We then prove Strichartz estimates for the Schrödinger equation, for a family of admissible pairs which is larger than in the Euclidean case. This extends the results obtained by Anker and Pierfelice on real hyperbolic spaces. As a further application, we study the dispersive properties of the Schrödinger equation associated with a distinguished Laplacian on Damek-Ricci spaces, showing that in this case the standard dispersive estimate fails while suitable weighted Strichartz estimates hold.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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