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arXiv 1202.4052math.APmath.FA
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Bochner-Riesz平均的约束估计、锐谱乘子和端点估计

Restriction estimates, sharp spectral multipliers and endpoint estimates for Bochner-Riesz means

Peng Chen, El Maati Ouhabaz, Adam Sikora, Lixin Yan

摘要:

我们考虑$L^2(X)$上的抽象非负自伴算子,它们满足相应波动方程的有限速度传播性质。对于这样的运营商,我们引入了一个限制型条件的情况下,标准的拉普拉斯算子是等价的$(p,2)$限制估计斯坦和托马斯。接下来,我们表明,在考虑抽象设置我们的限制类型的条件意味着尖锐的谱乘数和端点估计的Bochner-Riesz求和。我们还观察到,这种限制估计适用于满足色散或Eschenhartz估计的算子。我们得到了几个二阶微分算子的谱乘子的新结果,并恢复了一些已知的结果。我们的例子包括$\RR^n$上具有平方反势的薛定谔算子、谐振子、紧流形上的椭圆算子和渐近锥流形上的薛定谔算子。

英文摘要:

We consider abstract non-negative self-adjoint operators on $L^2(X)$ which satisfy the finite speed propagation property for the corresponding wave equation. For such operators we introduce a restriction type condition which in the case of the standard Laplace operator is equivalent to $(p,2)$ restriction estimate of Stein and Tomas. Next we show that in the considered abstract setting our restriction type condition implies sharp spectral multipliers and endpoint estimates for the Bochner-Riesz summability. We also observe that this restriction estimate holds for operators satisfying dispersive or Strichartz estimates. We obtain new spectral multiplier results for several second order differential operators and recover some known results. Our examples include Schrödinger operators with inverse square potentials on $\RR^n$, the harmonic oscillator, elliptic operators on compact manifolds and Schrödinger operators on asymptotically conic manifolds.

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