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On the lower bound of the Mabuchi energy and its application
In this article, we introduce some new functional which is convex along geodesic in the infinite dimensional space of Kähler metrics/potentials in a fixed Kähler class. This functional is also introduced by S. Donaldson in a slightly wider context. The Euler-Lagrange equation of this functional is some new Monge Ampere type equation. When C1 < 0, we can construct such a convex functional which is dominated by the Mabuchi energy. Thus we provide a new approach in bounding the Mabuchi energy, namely bounding this new functional from below. Thus it is crucial to find a critical point of this new functional. In complex surface, we prove a necessary and sufficent condition for this new functional to have a critical point.