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arXiv · 2604.17363

Ground States of One-Dimensional Fermionic Schr\"{o}dinger Systems Near a Critical Exponent

Bin Chen·Yujin Guo·Yong Luo·Juncheng Wei
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Abstract

We study ground states of the fermionic nonlinear Schr\"{o}dinger system $J_2(p)$ in $\R$, where $p>1$ denotes a polynomial exponent of the nonlinear term. It is known that the system $J_2(p)$ admits ground states for any $1<p<2$, while there is no ground state for $J_2(2)$. We prove that there is no ground state of $J_2(p)$ as $p\searrow 2$, which addresses the special case of Conjecture 5 in [D. Gontier, M. Lewin and F. Q. Nazar, ARMA, 2021]. The refined limiting profile of ground states for $J_2(p)$ is also analyzed as $p\nearrow 2$, which shows that the corresponding density admits exactly two bumps whose distance goes up to infinity as $p\nearrow 2$.

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Bin Chen, Yujin Guo, Yong Luo, Juncheng Wei. 2026-04-19. Ground States of One-Dimensional Fermionic Schr\"{o}dinger Systems Near a Critical Exponent. https://arxiv.org/abs/2604.17363

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