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A geometric flow based in the Riemann-Christoffel curvature tensor that in two dimensions has some common features with the usual Ricci flow is presented. For $n$ dimensional spaces this new flow takes into account all the components of the…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Patricio S. Letelier

In this paper we introduce a new generalisation of the relative Fisher Information for Markov jump processes on a finite or countable state space, and prove an inequality which connects this object with the relative entropy and a large…

泛函分析 · 数学 2018-12-12 Bastian Hilder , Mark A. Peletier , Upanshu Sharma , Oliver Tse

In this paper, we present new estimates for the entropy dissipation of the Landau-Fermi-Dirac equation (with hard or moderately soft potentials) in terms of a weighted relative Fisher information adapted to this equation. Such estimates are…

偏微分方程分析 · 数学 2021-04-21 Ricardo J. Alonso , Véronique Bagland , Laurent Desvillettes , Bertrand Lods

The notion of group entropy is proposed. It enables to unify and generalize many different definitions of entropy known in the literature, as those of Boltzmann-Gibbs, Tsallis, Abe and Kaniadakis. Other new entropic functionals are…

统计力学 · 物理学 2015-05-28 Piergiulio Tempesta

Dynamical aspects of information-theoretic and entropic measures of quantum systems are studied. First, we show that for the time-dependent harmonic oscillator, as well as for the charged particle in certain time-varying electromagnetic…

量子物理 · 物理学 2022-03-22 K. Andrzejewski

Although the Poincare' and the geometrization conjectures were recently proved by Perelman, the proof relies heavily on properties of the Ricci flow previously investigated in great detail by Hamilton. Physical realization of such a flow…

高能物理 - 理论 · 物理学 2010-05-14 Arkady L. Kholodenko

In this paper we discuss Perelman's Lambda-functional, Perelman's Ricci shrinker entropy as well as the Ricci expander entropy on a class of manifolds with isolated conical singularities. On such manifolds, a singular Ricci de Turck flow…

微分几何 · 数学 2019-02-07 Klaus Kroencke , Boris Vertman

In this work we construct and analyze exact solutions describing Ricci flows and nonholonomic deformations of four dimensional (4D) Taub-NUT spacetimes. It is outlined a new geometric techniques of constructing Ricci flow solutions. Some…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Sergiu I. Vacaru , Mihai Visinescu

The $(i)$ reciprocity relations for the relative Fisher information (RFI, hereafter) and $(ii)$ a generalized RFI-Euler theorem, are self-consistently derived from the Hellmann-Feynman theorem. These new reciprocity relations generalize the…

统计力学 · 物理学 2015-05-12 R. C. Venkatesan , A. Plastino

We establish effective existence and uniqueness for the heat flow on time-dependent Riemannian manifolds, under minimal assumptions tailored towards the study of Ricci flow through singularities. The main point is that our estimates only…

微分几何 · 数学 2020-06-30 Beomjun Choi , Jianhui Gao , Robert Haslhofer , Daniel Sigal

We generalize an entropy calculation of Perelman to the case of domains evolving inside a Ricciflow solution. In the case of Euclidean space as ambient manifold an interesting relation with Harnack inequalities emerges.

微分几何 · 数学 2007-05-23 Klaus Ecker

We introduce the notion of contact Ricci flow associated with the Reeb vector field. Using it, we give a simple proof of the Poincare conjecture.

微分几何 · 数学 2012-01-18 Jong Taek Cho

This paper establishes a unified framework integrating geometric flows with deep learning through three fundamental innovations. First, we propose a thermodynamically coupled Ricci flow that dynamically adapts parameter space geometry to…

机器学习 · 计算机科学 2025-03-26 Ming Lei , Christophe Baehr

I survey some of the developments in the theory of Ricci flow and its applications from the past decade. I focus mainly on the understanding of Ricci flows that are permitted to have unbounded curvature in the sense that the curvature can…

微分几何 · 数学 2020-05-07 Peter M. Topping

We give a survey on the Chern-Ricci flow, a parabolic flow of Hermitian metrics on complex manifolds. We emphasize open problems and new directions.

微分几何 · 数学 2022-07-12 Valentino Tosatti , Ben Weinkove

We present a new relation between the short time behavior of the heat flow, the geometry of optimal transport and the Ricci flow. We also show how this relation can be used to define an evolution of metrics on non-smooth metric measure…

泛函分析 · 数学 2012-08-30 Nicola Gigli , Carlo Mantegazza

In this paper, we are interested in conical structures of manifolds with respect to the Ricci flow and, in particular, we study them from the point of view of Perelman's functionals. In a first part, we study Perelman's $\lambda$ and $\nu$…

微分几何 · 数学 2017-07-20 Tristan Ozuch

The effects of resonances and flow on the correlation function for two identical particles are described assuming chaotic sources and classical propagation of particles. Expanding to second order in relative momenta, the source sizes can be…

高能物理 - 唯象学 · 物理学 2016-09-01 H. Heiselberg

This paper defines a parabolic frequency for solutions of the heat equation on a Ricci flow and proves it's monotonicity along the flow. Frequency monotonicity is known to have many useful consequences; here it is shown to provide a simple…

微分几何 · 数学 2022-08-01 Julius Baldauf , Dain Kim

This paper introduces a functional generalizing Perelman's weighted Hilbert-Einstein action and the Dirichlet energy for spinors. It is well-defined on a wide class of non-compact manifolds; on asymptotically Euclidean manifolds, the…

微分几何 · 数学 2022-06-22 Julius Baldauf , Tristan Ozuch