Abstract
Over the space of Kähler metrics associated to a fixed Kähler class, we first prove the lower bound of the energy functional \(\tilde{E}^\beta \), then we provide the criteria of the geodesics rays to detect the lower bound of \(\tilde{{\mathfrak {J}}}^\beta \)-functional . They are used to obtain the I-properness of Mabuchi’s K-energy. The criteria are examined under a necessary and sufficient condition by showing the convergence of the negative gradient flow of \(\tilde{{\mathfrak {J}}}^\beta \)-functional.
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Communicated by J. Jost.