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We derive variational formulas for the total Q-prime curvature under the deformation of strictly pseudoconvex domains in a complex manifold. We also show that the total Q-prime curvature agrees with the renormalized volume of such domains…

Differential Geometry · Mathematics 2016-11-22 Kengo Hirachi , Taiji Marugame , Yoshihiko Matsumoto

On a complete Riemannian manifold $M$, we study the spectral flow of a family of Callias operators. We derive a codimension zero formula when the dimension of $M$ is odd and a codimension one formula when the dimension of $M$ is even. These…

Differential Geometry · Mathematics 2025-09-03 Pengshuai Shi

We study the J-flow on Kahler surfaces when the Kahler class lies on the boundary of the open cone for which global smooth convergence holds, and satisfies a nonnegativity condition. We obtain a C^0 estimate and show that the J-flow…

Differential Geometry · Mathematics 2016-01-20 Hao Fang , Mijia Lai , Jian Song , Ben Weinkove

In this paper, we investigate the regularized mean curvature flow starting from an invariant hypersurface in a Hilbert space equipped with an isometric and almost free action of a Hilbert Lie group whose orbits are regularized minimal. We…

Differential Geometry · Mathematics 2018-11-07 Naoyuki Koike

Let $(M, g)$ be a compact Riemannian manifold of dimension $N \geq 5$ and $Q_g$ be its $Q$ curvature. The prescribed $Q$ curvature problem is concerned with finding metric of constant $Q$ curvature in the conformal class of $g$. This…

Differential Geometry · Mathematics 2011-06-09 Juncheng Wei , Chunyi Zhao

Earlier work of the first author examined two boundary value problems associated to the Gauss Curvature Flow on a surface of revolution generated by a positive, differentiable function on a compact interval. In this continuation, two…

Differential Geometry · Mathematics 2024-01-08 Thalia D. Jeffres , Leonardo Solanilla

We consider the inverse mean curvature flow in smooth Riemannian manifolds of the form $([R_{0},\infty)\times S^n,\bar{g})$ with metric $\bar{g}=dr^2+{\vartheta}^2(r){\sigma}$ and non-positive radial sectional curvature. We prove, that for…

Differential Geometry · Mathematics 2017-01-18 Julian Scheuer

In this paper, we compute the sectional curvature of the quantomorphism group $\mathcal{D}_q(M)$ whose geodesic equation is the quasi-geostrophic (QG) equation in geophysics and oceanography, for flows with a stream function depending on…

Differential Geometry · Mathematics 2019-07-26 Jae Min Lee , Stephen C. Preston

It is shown that the curvature function satisfies a nonlinear evolution equation under the general curve shortening flow and a detailed asymptotic behavior of the closed curves is presented when they contract to a point in finite time.

Analysis of PDEs · Mathematics 2009-11-16 RongLi Huang , JiGuang Bao

We establish an algorithm which computes formulae for the CR GJMS operators, the $P^\prime$-operator, and the $Q^\prime$-curvature in terms of CR tractors. When applied to torsion-free pseudo-Einstein contact forms, this algorithm both…

Differential Geometry · Mathematics 2017-09-26 Jeffrey S. Case , A. Rod Gover

In this paper, we focus our study on the ends of a locally conformally flat complete manifold with finite total $Q$-curvature. We prove that for such a manifold, the integral of the $Q$-curvature equals an integral multiple of a dimensional…

Differential Geometry · Mathematics 2016-01-01 Zhiqin Lu , Yi Wang

In this paper, we present a unified flow approach to prescribed Chern scalar curvature problem on compact Hermitian manifolds with negative Gauduchon degree. When the conformal class of its Hermitian metric contains a balanced metric, we…

Differential Geometry · Mathematics 2025-01-08 Weike Yu

We study a renormalization group flow of ABJM theory embedded into the warped A_8 geometry and explore the dependence of the vacuum structure on the parameters of the theory. This model has a product group gauge structure U(N)xU(n+l) and…

High Energy Physics - Theory · Physics 2015-06-15 William Cottrell , Jerome Gaillard , Akikazu Hashimoto

In this paper, we study the graphical mean curvature flow in a warped product $_r G/K \times I$, where $G/K$ is a symmetric space of compact type, $I$ is an open interval, and $r$ is a smooth positive function on $I$. If the initial…

Differential Geometry · Mathematics 2024-12-17 Naotoshi Fujihara , Naoyuki Koike

We study geodesics flows on curved quantum Riemannian geometries using a recent formulation in terms of bimodule connections and completely positive maps. We complete this formalism with a canonical $*$ operation on noncommutative vector…

Quantum Algebra · Mathematics 2023-07-12 Edwin Beggs , Shahn Majid

We study a version of the Hermitian curvature flow on compact homogeneous complex manifolds. We prove that the solution has a finite exstinction time $T>0$ and we analyze its behaviour when $t\to T$. We also determine the invariant static…

Differential Geometry · Mathematics 2019-03-26 Francesco Panelli , Fabio Podestà

We introduce a geometric evolution equation for 3-manifolds with sectional curvature of one sign which is in some sense dual to the Ricci flow. On a closed 3-manifold with negative sectional curvature, we establish short time existence and…

Differential Geometry · Mathematics 2007-05-23 Bennett Chow , Richard Hamilton

This expository paper presents the current knowledge of particular fully nonlinear curvature flows with local forcing term, so-called locally constrained curvature flows. We focus on the spherical ambient space. The flows are designed to…

Analysis of PDEs · Mathematics 2022-06-22 Chuanqiang Chen , Pengfei Guan , Junfang Li , Julian Scheuer

We study the mean curvature flow of complete space-like submanifolds in pseudo-Euclidean space with bounded Gauss image, as well as that of complete submanifolds in Euclidean space with convex Gauss image. By using the confinable property…

Differential Geometry · Mathematics 2007-05-23 Y. L. Xin

In this paper, we investigate a regularized mean curvature flow starting from an invariant hypersurface in a Hilbert space equipped with an isometric and almost free action of a Hilbert Lie group whose orbits are minimal regularizable…

Differential Geometry · Mathematics 2022-11-24 Naoyuki Koike