A general existence result for the Toda system on compact surfaces
A general existence result for the Toda system on compact surfaces
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DOI:
10.1016/j.aim.2015.07.036
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发表时间:
2013-06
影响因子:
1.7
通讯作者:
Luca Battaglia;Aleks Jevnikar;A. Malchiodi;D. Ruiz
中科院分区:
文献类型:
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作者:
Luca Battaglia;Aleks Jevnikar;A. Malchiodi;D. Ruiz
In this paper we consider the following Toda system of equations on a compact surface:{− Δ u 1= 2 ρ 1 (h 1 e u 1∫ Σ h 1 e u 1 d V g− 1)− ρ 2 (h 2 e u 2∫ Σ h 2 e u 2 d V g− 1)− Δ u 1=− 4 π∑ j= 1 m α 1, j (δ p j− 1),− Δ u 2= 2 ρ 2 (h 2 e u 2∫ Σ h 2 e u 2 d V g− 1)− ρ 1 (h 1 e u 1∫ Σ h 1 e u 1 d V g− 1)− Δ u 2=− 4 π∑ j= 1 m α 2, j (δ p j− 1), which is motivated by the study of models in non-abelian Chern–Simons theory. Here h 1, h 2 are smooth positive functions, ρ 1, ρ 2 two positive parameters, p i points of the surface and α 1, i, α 2, j non-negative numbers. We prove a general existence result using variational methods. The same analysis applies to the following mean field equation− Δ u= ρ 1 (h e u∫ Σ h e u d V g− 1)− ρ 2 (h e− u∫ Σ h e− u d V g− 1), which arises in fluid dynamics.