Existence and Stability of Schrödinger Solitons on Noncompact Manifolds

Existence and Stability of Schrödinger Solitons on Noncompact Manifolds
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非紧流形上薛定谔孤子的存在性和稳定性

DOI:
10.1137/18m1216031
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发表时间:
2019
影响因子:
2
通讯作者:
Marzuola, Jeremy L.
Marzuola, Jeremy L.
中科院分区:
数学2区
文献类型:
--
作者:
Borthwick, David;Donninger, Roland;Lenzmann, Enno;Marzuola, Jeremy L.

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研究了一类旋转对称非紧流形上的非线性聚焦薛定谔方程。我们证明了孤立波的存在通过扰动了平坦欧几里德的情况。此外,我们还通过分析相应线性化算子的谱性质,研究了径向扰动下孤立波的稳定性。最后,在L2-临界的情况下,通过考虑Vakhitov-Kolokolov标准(也见结果Grillakis-Shatah-施特劳斯),我们提供的数值证据表明,引入一个非平凡的几何形状不稳定的孤立波在各种情况下,无论曲率的流形。特别地,对应于标准双曲空间的度量的参数将导致与Banica-Duyckaerts(2015)的爆破结果一致的不稳定性。我们还提供了数值证据的几何形状下,这将是可能的Vakhitov-Kolokolov条件,建议稳定性,提供一定的光谱性质,在这些空间。
We consider the focusing nonlinear Schrödinger equation on a large class of rotationally symmetric, noncompact manifolds. We prove the existence of a solitary wave by perturbing off the flat Euclidean case. Furthermore, we study the stability of the solitary wave under radial perturbations by analyzing spectral properties of the associated linearized operator. Finally, in the L2-critical case, by considering the Vakhitov--Kolokolov criterion (see also results of Grillakis--Shatah--Strauss), we provide numerical evidence showing that the introduction of a nontrivial geometry destabilizes the solitary wave in a wide variety of cases, regardless of the curvature of the manifold. In particular, the parameters of the metric corresponding to standard hyperbolic space will lead to instability consistent with the blow-up results of Banica--Duyckaerts (2015). We also provide numerical evidence for geometries under which it would be possible for the Vakhitov--Kolokolov condition to suggest stability, provided certain spectral properties hold in these spaces.
产品空间上的非线性薛定谔方程基态
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