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Related papers: The modified K\"ahler-Ricci flow, II

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We consider the evolution of an almost Hermitian metric by the $(1,1)$ part of its Chern-Ricci form on almost complex manifolds. This is an evolution equation first studied by Chu and coincides with the Chern-Ricci flow if the complex…

Differential Geometry · Mathematics 2019-10-04 Tao Zheng

We consider dimension reduction for solutions of the K\"ahler-Ricci flow with nonegative bisectional curvature. When the complex dimension $n=2$, we prove an optimal dimension reduction theorem for complete translating K\"ahler-Ricci…

Differential Geometry · Mathematics 2007-05-23 Huai-Dong Cao

Let $\overline{M}$ be a compact complex manifold with smooth K\"ahler metric $\eta$, and let $D$ be a smooth divisor on $\overline{M}$. Let $M=\overline{M}\setminus D$ and let $\hat{\omega}$ be a Carlson-Griffiths type metric on $M$. We…

Differential Geometry · Mathematics 2018-08-21 Albert Chau , Ka-Fai Li , Liangming Shen

We study a parabolic complex Monge-Amp\`{e}re type equation of the form \eqref{MA} on a complete noncompact \K manifold. We prove a short time existence result and obtain basic estimates. Applying these results, we prove that under certain…

Differential Geometry · Mathematics 2009-10-26 Albert Chau , Luen-Fai Tam

We study pluripotential complex Monge-Amp\`ere flows in big cohomology classes on compact K{\"a}hler manifolds. We use the Perron method, considering pluripotential subsolutions to the Cauchy problem. We prove that, under natural…

Differential Geometry · Mathematics 2022-01-04 Quang-Tuan Dang

To every Ricci flow on a manifold M over a time interval I, we associate a shrinking Ricci soliton on the space-time M x I. We relate properties of the original Ricci flow to properties of the new higher-dimensional Ricci flow equipped with…

Differential Geometry · Mathematics 2009-11-26 Esther Cabezas-Rivas , Peter M. Topping

This short note studies the collapsing behavior of the K\"ahler-Ricci flow on a compact K\"ahler manifold X admitting a holomorphic submersion X -> B where B is a K\"ahler manifold of lower dimension than X. We give cohomological and…

Differential Geometry · Mathematics 2011-12-30 Frederick Tsz-Ho Fong

We generalize the inverse Monge-Ampere flow, which was introduced in \cite{CHT17}, and provide conditions that guarantee the convergence of the flow without a priori assumption that $X$ has a K\"ahler-Einstein metric. We also show that if…

Differential Geometry · Mathematics 2025-09-16 Nikita Klemyatin

We study the continuity of solutions to complex Monge-Ampere equations with prescribed singularities. This generalizes the previous results of DiNezza-Lu and the author. As an application, we can run the Monge-Ampere flow starting at a…

Analysis of PDEs · Mathematics 2023-07-26 Quang-Tuan Dang

In this paper, we extend the method in [TZhu5] to study the energy level $L(\cdot)$ of Perelman's entropy $\lambda(\cdot)$ for K\"ahler-Ricci flow on a Fano manifold. Consequently, we first compute the supremum of $\lambda(\cdot)$ in…

Differential Geometry · Mathematics 2011-07-21 Gang Tian , Shijin Zhang , Zhenlei Zhang , Xiaohua Zhu

We show that the underlying complex manifold of a complete non-compact two-\linebreak dimensional shrinking gradient K\"ahler-Ricci soliton $(M,\,g,\,X)$ with soliton metric $g$ with bounded scalar curvature $\operatorname{R}_{g}$ whose…

Differential Geometry · Mathematics 2022-12-15 Charles Cifarelli , Ronan J. Conlon , Alix Deruelle

It is observed that for complex surfaces, the positivity of the Ricci curvature is preserved by the K\"ahler-Ricci flow, under the additional assumption that the sum of the two lowest eigenvalues of the traceless curvature operator is…

Differential Geometry · Mathematics 2007-05-23 D. H. Phong , Jacob Sturm

In this note, we give a new proof for Perelman's scalar curvature and diameter estimates for the K\"ahler-Ricci flow on Fano manifolds. The proof relies on a new Harnack estimate for a special family of functions in space-time. Our new…

Differential Geometry · Mathematics 2023-10-13 Wangjian Jian , Jian Song , Gang Tian

We generalize the maximal time existence of K\"{a}hler-Ricci flow in Tian-Zhang and Song-Tian to conical case. Furthermore, if the twisted canonical bundle $K_{M}+(1-\beta)[D]$ is big or big and nef, we can expect more on the limit…

Differential Geometry · Mathematics 2014-11-27 Liangming Shen

We establish a lower bound for the Donaldson-Futaki invariant of optimal degenerations produced by the K\"ahler-Ricci flow in terms of the greatest Ricci lower bound on arbitrary Fano manifolds. As an application, we can generalize the…

Differential Geometry · Mathematics 2020-01-20 Ryosuke Takahashi

We offer an example of the second order Kawaguchi metric function the extremal flow of which generalizes the flat space-time model of the semi-classical spinning particle to the framework of the pseudo-Riemannian space-time. The general…

Mathematical Physics · Physics 2014-07-25 Roman Matsyuk

In this paper, we prove that on a Fano manifold $M$ which admits a K\"ahler-Ricci soliton $(\om,X)$, if the initial K\"ahler metric $\om_{\vphi_0}$ is close to $\om$ in some weak sense, then the weak K\"ahler-Ricci flow exists globally and…

Differential Geometry · Mathematics 2011-06-06 Kai Zheng

The present work extends the application of a modified Ricci flow equation to an asymptotically non flat space, namely Marder's cylindrially symmetric space. It is found that the flow equation has a solution at least in a particular case.

General Relativity and Quantum Cosmology · Physics 2015-06-15 Shubhayu Chatterjee , Narayan Banerjee

Expository observation on the $\mu$-invariant of singularity models for Ricci Flow.

Differential Geometry · Mathematics 2011-04-19 Bennett Chow

On certain del Pezzo surfaces with large automorphism groups, it is shown that the solution to the K\"ahler-Ricci flow with a certain initial value converges in $C^\infty$-norm exponentially fast to a K\"ahler-Einstein metric. The proof is…

Algebraic Geometry · Mathematics 2007-10-31 Gordon Heier