Paper · Mar 1, 2023

Hermitian Calabi functional in complexified orbits

Jie He, Kai Zheng

math.DGWider flowsarXiv:2303.00631Internat. J. Math. 34 (2023), no. 8, Paper No. 2350047, 44 pp
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Abstract

Let be a compact symplectic manifold. We denote by the space of all almost complex structure compatible with . has a natural foliation structure with the complexified orbit as leaf. We obtain an explicit formula of the Hessian of Hermitian Calabi functional at an extremal almost Kähler metric in . We prove that the Hessian of Hermitian Calabi functional is semi-positive definite at critical point when restricted to a complexified orbit, as corollaries we obtain some results analogy to Kähler case. We also show weak parabolicity of the Hermitian Calabi flow.

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