English
Related papers

Related papers: Simple root flows for Hitchin representations

200 papers

In a series of earlier papers, we have developed expressions for ion and electron velocity distribution functions and theirvelocity moments at the passage over the solar wind termination shock. As we have shown there, with introduction of…

Solar and Stellar Astrophysics · Physics 2014-08-27 H. -J. Fahr , M. Siewert

We prove the existence and uniqueness of renormalized solutions of the Liouville equation for $n$ particles with a interaction potential in $BV_{loc}$ execpt at the origin. This implies the existence and uniqueness of a a.e. flow solution…

Analysis of PDEs · Mathematics 2013-10-04 Maxime Hauray

Using a size condition of the sharp log Sobolev functional (log entropy) near infinity only, we prove a rigidity result for ancient Ricci flows without sign condition on the curvatures. The result is also related to the problem of…

Differential Geometry · Mathematics 2024-06-26 Qi S. Zhang

In this paper, we introduce a class of new logarithmic curvature flow. The flows are designed to embrace the monotonicity of the related functional, and the convergence of this flow would tackle the solvability of the weighted…

Analysis of PDEs · Mathematics 2023-06-16 Jinrong Hu , Qiongfang Mao

A fundamental tool in the analysis of Ricci flow is a compactness result of Hamilton in the spirit of the work of Cheeger, Gromov and others. Roughly speaking it allows one to take a sequence of Ricci flows with uniformly bounded curvature…

Differential Geometry · Mathematics 2011-10-18 Peter Topping

We present a monotonic expression for the Ricci flow, valid in all dimensions and without curvature assumptions. It is interpreted as an entropy for a certain canonical ensemble. Several geometric applications are given. In particular, (1)…

Differential Geometry · Mathematics 2007-05-23 Grisha Perelman

In this article we define new flows on the Hitchin components for PGL(V). Special examples of these flows are associated to simple closed curves on the surface and give generalized twist flows. Other examples, so called eruption flows, are…

Differential Geometry · Mathematics 2019-10-03 Zhe Sun , Anna Wienhard , Tengren Zhang

We prove that the Hitchin parametrization provides geodesic coordinates at the Fuchsian locus for the pressure metric in the Hitchin component $\mathcal{H}_{3}(S)$ of surface group representations into $PSL(3,\mathbb{R})$. The proof…

Differential Geometry · Mathematics 2023-06-21 Xian Dai

The present paper aims to investigate the metric mean dimension theory of continuous flows. We introduce the notion of metric mean dimension for continuous flows to characterize the complexity of flows with infinite topological entropy. For…

Dynamical Systems · Mathematics 2023-11-14 Rui Yang , Ercai Chen , Xiaoyao Zhou

We present a computational framework to address the flow of two immiscible viscous liquids which co-flow into a shallow rectangular container at one side, and flow out into a holding container at the opposite side. Assumptions based on the…

Fluid Dynamics · Physics 2013-09-02 Shahriar Afkhami , Yuriko Renardy

We prove for $C^\infty$ non-singular flows on three-dimensional compact manifolds with positive entropy, there are at most finitely many ergodic measures of maximal entropy. This result extends the notable work of Buzzi-Crovisier-Sarig…

Dynamical Systems · Mathematics 2025-03-28 Yuntao Zang

We prove a Liouville type result for convex solutions of the Lagrangian mean curvature flow with restricted quadratic growth assumptions at antiquity on the solutions.

Differential Geometry · Mathematics 2024-07-18 Arunima Bhattacharya , Micah Warren , Daniel Weser

Liouville field theory on an unoriented surface is investigated, in particular, the one point function on a RP^2 is calculated. The constraint of the one point function is obtained by using the crossing symmetry of the two point function.…

High Energy Physics - Theory · Physics 2009-11-07 Yasuaki Hikida

An alternative representation of an exact statistical field theory for simple fluids, based on the method of collective variables, is presented. The results obtained are examined from the point of another version of theory that was…

Statistical Mechanics · Physics 2009-11-11 Jean-Michel Caillol , Oksana Patsahan , Ihor Mryglod

We study the existence of solutions of Ricci flow equations of Ollivier-Lin-Lu-Yau curvature defined on weighted graphs. Our work is motivated by\cite{NLLG} in which the discrete time Ricci flow algorithm has been applied successfully as a…

Differential Geometry · Mathematics 2025-06-23 Shuliang Bai , Yong Lin , Linyuan Lu , Zhiyu Wang , Shing-Tung Yau

Unidirectional flow is the simplest phenomenon of fluid mechanics. Its mathematical description, the Dirichlet problem for Poisson's equation in two dimensions with constant forcing, arises in many physical contexts, such as the torsion of…

Fluid Dynamics · Physics 2016-06-15 Martin Z. Bazant

We review different notions of synthetic Ricci flow that apply to time-dependent families of metric measure spaces and which are based on properties of the heat flow, ideas from optimal transport, and the asymptotic behaviour of volumes.…

Differential Geometry · Mathematics 2025-11-17 Matthias Erbar , Marco Flaim , Eric Hupp , Zhenhao Li , Timo Schultz , Karl-Theodor Sturm

We first prove stochastic representation formulae for space-time harmonic mappings defined on manifolds with evolving Riemannian metric. We then apply these formulae to derive Liouville type theorems under appropriate curvature conditions.…

Probability · Mathematics 2014-03-27 Hongxin Guo , Robert Philipowski , Anton Thalmaier

We study harmonic map heat flow along ancient super Ricci flow, and derive several Liouville theorems with controlled growth from Perelman's reduced geometric viewpoint. For non-positively curved target spaces, our growth condition is…

Differential Geometry · Mathematics 2021-08-04 Keita Kunikawa , Yohei Sakurai

We show that a certain entropy-like function is convex, under an optimal transport problem that is adapted to Ricci flow. We use this to reprove the monotonicity of Perelman's reduced volume.

Differential Geometry · Mathematics 2009-01-09 John Lott