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arXiv 2602.04790math.AP
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具有边界黎曼面的均场方程的爆破解

Blow-up solutions for mean field equations with non-quantized singularities on Riemann surfaces with boundary

Mohameden Ahmedou, Zhengni Hu, Miaomiao Zhu

AI总结:

本文研究了具有边界的黎曼面上均场方程的爆破解,通过Lyapunov-Schmidt约简方法,在非量化奇点情况下构造了纯奇点和混合奇点-正则爆破解。

摘要:

我们研究了在具有边界的紧致黎曼面上(Σ,g)上具有奇源的均场方程,受齐次Neumann边界条件约束:$$ -Δ_g v = ρ\left( \frac{V e^{v}}{\int_ΣV e^{v}\, d v_g} - \frac{1}{|Σ|_g}\right) - \sum_{ξ∈Q} \frac{\varrho(ξ)}{2}γ(ξ) \left(δ_ξ- \dfrac{1}{|Σ|_g}\right) 在Σ;以及∂_{ν_g} v = 0 在∂Σ。这里,V是光滑正函数,ρ是非负参数,Q⊂Σ是预设的奇点集,奇点权重满足γ(ξ)∈(-1,+∞)\{ℕ∪{0})。系数由varrho(ξ)=8π对于ξ∈Σ\{∂Σ和varrho(ξ)=4π对于ξ∈∂Σ给出。我们构造了非量化奇点情况下爆破解,包括纯奇点和混合奇点-正则爆破情况,参数接近共振值。构造是通过Lyapunov-Schmidt约简在适当稳定性假设下完成的。关键词:奇均场方程,爆破现象,Lyapunov-Schmidt约简,具有边界的黎曼面

英文摘要:

We study mean field equations with singular sources on a compact Riemann surface with boundary $(Σ,g)$, subject to homogeneous Neumann boundary conditions: \[ -Δ_g v = ρ\left( \frac{V e^{v}}{\int_ΣV e^{v}\, d v_g} - \frac{1}{|Σ|_g}\right) - \sum_{ξ\in Q} \frac{\varrho(ξ)}{2}γ(ξ) \left(δ_ξ- \dfrac{1}{|Σ|_g}\right) \text{in }Σ; \qquad \partial_{ν_g} v = 0 \text{ on }\partialΣ. \] Here, $V$ is a smooth positive function, $ρ$ is a non-negative parameter, $Q\subsetΣ$ is a finite set of prescribed singular points, and the singular weights satisfy $γ(ξ)\in(-1,+\infty)\setminus(\mathbb{N}\cup\{0\})$. The coefficients are given by $\varrho(ξ)=8π$ for $ξ\inΣ\setminus\partialΣ$ and $\varrho(ξ)=4π$ for $ξ\in\partialΣ$. We construct blow-up solutions in the non-quantized singular regime, including purely singular and mixed singular-regular blow-up cases, with parameters approaching resonant values. The construction is achieved via a Lyapunov-Schmidt reduction under suitable stability assumptions. Key words: Singular mean field equations, Blow-up phenomena, Lyapunov-Schmidt reduction, Riemann surfaces with boundary

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