Cubic Oscillator: Geometric Approach and Zeros of Eigenfunctions

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Main Authors: Thabet, Faouzi, Braek, Gliia, Mansouri, Marwa, Chouikhi, Mondher
Format: Preprint
Published: 2025
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author Thabet, Faouzi
Braek, Gliia
Mansouri, Marwa
Chouikhi, Mondher
author_facet Thabet, Faouzi
Braek, Gliia
Mansouri, Marwa
Chouikhi, Mondher
contents In this paper, we give a geometric approach to the cubic oscillator with three distinct turning points based on the $\mathcal{D\diagup SG}$\emph{\ correspondence }introduced in \cite{Thabet+al}. The existence of quantization conditions, depending on extra data for the potential, is related to some particular critical graphs of the quadratic differential $λ^{2}\left(z-a\right) \left( z^{2}-1\right) dz^{2}$ where $λ$ is a non vanishing complex number, $a\in \mathbb{C}\diagdown \left\{ -1,1\right\}$. We investigate this geometric approach in two level: the first level is studying an inverse spectral problem related to cubic oscillator. The second level describes the zeros locations of eigenfunctions related to this oscillator. Our results may provide a geometric proof of some questions related to cubic potential case.
format Preprint
id arxiv_https___arxiv_org_abs_2511_02050
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Cubic Oscillator: Geometric Approach and Zeros of Eigenfunctions
Thabet, Faouzi
Braek, Gliia
Mansouri, Marwa
Chouikhi, Mondher
Classical Analysis and ODEs
In this paper, we give a geometric approach to the cubic oscillator with three distinct turning points based on the $\mathcal{D\diagup SG}$\emph{\ correspondence }introduced in \cite{Thabet+al}. The existence of quantization conditions, depending on extra data for the potential, is related to some particular critical graphs of the quadratic differential $λ^{2}\left(z-a\right) \left( z^{2}-1\right) dz^{2}$ where $λ$ is a non vanishing complex number, $a\in \mathbb{C}\diagdown \left\{ -1,1\right\}$. We investigate this geometric approach in two level: the first level is studying an inverse spectral problem related to cubic oscillator. The second level describes the zeros locations of eigenfunctions related to this oscillator. Our results may provide a geometric proof of some questions related to cubic potential case.
title Cubic Oscillator: Geometric Approach and Zeros of Eigenfunctions
topic Classical Analysis and ODEs
url https://arxiv.org/abs/2511.02050