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arXiv 2210.07643math.AP
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具有三种波相互作用的Schrödinger系统的行波

Standing waves for a Schrödinger system with three waves interaction

Università Degli Studi di Pisa(比萨大学);Hefei University of Technology(合肥工业大学);Zhejiang Normal University(浙江师范大学);Central China Normal University(华中师范大学)

Luigi Forcella, Xiao Luo, Tao Yang, Xiaolong Yang

AI总结:

研究非线性Schrödinger方程组的行波,探讨临界和超临界质量情形下的地面态存在及其同步质量坍缩行为,并分析超临界情形下的激发态稳定性及全局解或爆破条件。

摘要:

我们研究了作为等离子体中拉曼放大模型的具有三种波相互作用的非线性Schrödinger方程组的行波。我们考虑了临界和超临界质量情形,并证明了地面态的存在及其同步质量坍缩行为。此外,我们展示了地面态集在相关Cauchy流下的稳定性。此外,在超临界质量情形下,我们构造了一个对应于强不稳定的行波的激发态。并且,我们准确地绘制了激发态的半平凡极限行为。最后,通过精确控制激发态的能量,我们给出了证明相应Cauchy问题解的全局存在或爆破的充分条件。

英文摘要:

We study standing waves for a system of nonlinear Schrödinger equations with three waves interaction arising as a model for the Raman amplification in a plasma. We consider the mass-critical and mass-supercritical regimes, and we prove existence of ground states along with a synchronized mass collapse behavior. In addition, we show that the set of ground states is stable under the associated Cauchy flow. Furthermore, in the mass-supercritical setting we construct an excited state that corresponds to a strongly unstable standing wave. Moreover, a semi-trivial limiting behavior of the excited state is drawn accurately. Finally, by a refined control of the excited state's energy, we give sufficient conditions to prove global existence or blow-up of solutions to the corresponding Cauchy problem.

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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