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arXiv 2202.04715math.DGmath.AP
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格林函数与复蒙日-安培方程

Green's functions and complex Monge-Ampère equations

Bin Guo, Duong H. Phong, Jacob Sturm

摘要:

得到了紧致Kähler流形上Green函数的一致$L^1$和下界.与经典的黎曼流形的Cheng-Li定理不同,下界不直接依赖于里奇曲率,而仅依赖于体积形式及其某些导数的积分界。特别地,对于某些$q>1$,得到了Kähler流形上Green函数的一致下界,它只依赖于数量曲率的下界和体积形式的$L^q$范数.证明依赖于辅助的蒙日-安培方程,并且基本上是非线性的。格林函数的下界反过来意味着对复杂的蒙日-安培方程的$C^1$和$C^2$估计对右边的函数有更尖锐的依赖性。

英文摘要:

Uniform $L^1$ and lower bounds are obtained for the Green's function on compact Kähler manifolds. Unlike in the classic theorem of Cheng-Li for Riemannian manifolds, the lower bounds do not depend directly on the Ricci curvature, but only on integral bounds for the volume form and certain of its derivatives. In particular, a uniform lower bound for the Green's function on Kähler manifolds is obtained which depends only on a lower bound for the scalar curvature and on an $L^q$ norm for the volume form for some $q>1$. The proof relies on auxiliary Monge-Ampère equations, and is fundamentally non-linear. The lower bounds for the Green's function imply in turn $C^1$ and $C^2$ estimates for complex Monge-Ampère equations with a sharper dependence on the function on the right hand side.

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