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arXiv 2004.00420math.DGhep-th
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高阶Yang-Mills-Higgs泛函的梯度流

Gradient Flows of Higher Order Yang-Mills-Higgs Functionals

Pan Zhang

摘要:

本文在闭黎曼流形上定义了推广Yang-Mills-Higgs泛函的泛函族.然后利用规范固定技巧证明了相应梯度流的短时存在性。高阶算符的极大值原理的缺乏给我们在估计Higgs场时带来了很多不便。我们观察到,$L^2$ -绑定的希格斯场是足够的能量估计在$4$维,我们表明,提供的阶导数,出现在高阶杨米尔斯-希格斯泛函,严格大于1,解决方案的梯度流不打任何有限时间奇点。对于具有Higgs自相互作用的Yang-Mills-Higgs $k$泛函,我们证明了在$\dim(M)<2(k+1)$条件下,伴随的梯度流在光滑的初始数据下允许长时间存在.证明依赖于局部$L^2$ -导数估计,能量估计和爆破分析。

英文摘要:

In this paper, we define a family of functionals generalizing the Yang-Mills-Higgs functional on a closed Riemannian manifold. Then we prove the short time existence of the corresponding gradient flow by a gauge fixing technique. The lack of maximal principle for the higher order operator brings us a lot of inconvenience during the estimates for the Higgs field. We observe that the $L^2$-bound of the Higgs field is enough for energy estimates in $4$ dimension, and we show that, provided the order of derivatives, appearing in the higher order Yang-Mills-Higgs functionals, is strictly greater than 1, solutions to the gradient flow do not hit any finite time singularities. As for the Yang-Mills-Higgs $k$-functional with Higgs self-interaction, we show that, provided $\dim(M)<2(k+1)$, the associated gradient flow admits long time existence with smooth initial data. The proof depends on local $L^2$-derivative estimates, energy estimates and blow-up analysis.

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