English

Partially concentrating standing waves for weakly coupled Schr\"odinger systems

Analysis of PDEs 2024-02-16 v2

Abstract

We study the existence of standing waves for the following weakly coupled system of two Schr\"odinger equations in RN\mathbb{R}^N, N=2,3N=2,3, {itψ1=22m1Δψ1+V1(x)ψ1μ1ψ12ψ1βψ22ψ1itψ2=22m2Δψ2+V2(x)ψ2μ2ψ22ψ2βψ12ψ2, \begin{cases} i \hslash \partial_{t}\psi_{1}=-\frac{\hslash^2}{2m_{1}}\Delta \psi_{1}+ {V_1}(x)\psi_{1}-\mu_{1}|\psi_{1}|^{2}\psi_{1}-\beta|\psi_{2}|^{2}\psi_{1} & \\ i \hslash \partial_{t}\psi_{2}=-\frac{\hslash^2}{2m_{2}}\Delta \psi_{2}+ {V_2}(x)\psi_{2}-\mu_{2}|\psi_{2}|^{2}\psi_{2}-\beta|\psi_{1}|^{2}\psi_{2},& \end{cases} where V1V_1 and V2V_2 are radial potentials bounded from below. We address the case m120m_{1}\sim \hslash^2\to0, m2m_2 constant, and prove the existence of a standing wave solution with both nontrivial components satisfying a prescribed asymptotic profile. In particular, the second component of such solution exhibits a concentrating behavior, while the first one keeps a quantum nature.

Keywords

Cite

@article{arxiv.2311.11648,
  title  = {Partially concentrating standing waves for weakly coupled Schr\"odinger systems},
  author = {Benedetta Pellacci and Angela Pistoia and Giusi Vaira and Gianmaria Verzini},
  journal= {arXiv preprint arXiv:2311.11648},
  year   = {2024}
}

Comments

23 pages

R2 v1 2026-06-28T13:25:52.441Z