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arxiv 2205.07775 v1 pith:CQMNZO2Y submitted 2022-05-16 math.AP

Existence of solutions to Chern-Simons-Higgs equations on graphs

classification math.AP
keywords lambdadeltachern-simons-higgscdotequationexistencesolutionscritical
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Let $G=(V,E)$ be a finite graph. We consider the existence of solutions to a generalized Chern-Simons-Higgs equation $$ \Delta u=-\lambda e^{g(u)}\left( e^{g(u)}-1\right)^2+4\pi\sum\limits_{j=1}^{N}\delta_{p_j} $$ on $G$, where $\lambda$ is a positive constant; $g(u)$ is the inverse function of $u=f(\upsilon)=1+\upsilon-e^{\upsilon}$ on $(-\infty, 0]$; $N$ is a positive integer; $p_1, p_2, \cdot\cdot\cdot, p_N$ are distinct vertices of $V$ and $\delta_{p_j}$ is the Dirac delta mass at $p_j$. We prove that there is critical value $\lambda_c$ such that the generalized Chern-Simons-Higgs equation has a solution if and only if $\lambda\geq \lambda_c$ . We also prove the existence of solutions to the Chern-Simons-Higgs equation $$ \Delta u=\lambda e^{u}(e^{u}-1)+4\pi\sum\limits_{j=1}^{N}\delta_{p_j} $$ on $G$ when $\lambda$ takes the critical value $\lambda_c$ and this completes the results of An Huang, Yong Lin and Shing-Tung Yau (Commun. Math. Phys. 377, 613-621 (2020)).

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