Results 21 to 30 of about 34,327 (198)

SOME RESULTS ON ∗−RICCI FLOW [PDF]

open access: yesFacta Universitatis, Series: Mathematics and Informatics, 2021
In this paper we have introduced the notion of ∗-Ricci flow and shown that ∗-Ricci soliton which was introduced by Kaimakamis and Panagiotidou in 2014 which is a self similar soliton of the ∗-Ricci flow. We have also find the deformation of geometric curvature tensors under ∗-Ricci flow.
Dipankar Debnath, Nirabhra Basu
openaire   +2 more sources

RICCI LOWER BOUND FOR KÄHLER–RICCI FLOW [PDF]

open access: yesCommunications in Contemporary Mathematics, 2014
We provide general discussion on the lower bound of Ricci curvature along Kähler–Ricci flows over closed manifolds. The main result is the non-existence of Ricci lower bound for flows with finite time singularities and non-collapsed global volume. As an application, we give examples showing that positivity of Ricci curvature would not be preserved by ...
openaire   +3 more sources

The Cotton Tensor and the Ricci Flow [PDF]

open access: yesGeometric Flows, 2017
AbstractWe compute the evolution equation of the Cotton and the Bach tensor under the Ricci flow of a Riemannian manifold, with particular attention to the three dimensional case, and we discuss some applications.
Carlo Mantegazza   +2 more
openaire   +4 more sources

Producing 3D Ricci flows with nonnegative Ricci curvature via singular Ricci flows [PDF]

open access: yesGeometry & Topology, 2021
We extend the concept of singular Ricci flow by Kleiner and Lott from 3d compact manifolds to 3d complete manifolds with possibly unbounded curvature. As an application of the generalized singular Ricci flow, we show that for any 3d complete Riemannian manifold with non-negative Ricci curvature, there exists a smooth Ricci flow starting from it.
openaire   +2 more sources

Geometric information flows and G. Perelman entropy for relativistic classical and quantum mechanical systems

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
This work consists an introduction to the classical and quantum information theory of geometric flows of (relativistic) Lagrange–Hamilton mechanical systems.
Sergiu I. Vacaru
doaj   +1 more source

Mosè Ricci. Habitat 5.0. L’Architettura del lungo presente

open access: yesTechne, 2021
«For more than fifty years, fashion, music and architecture have always seemed to express the same aspirations, the same expectations. Is it possible that they have remained so indifferent to the great environmental, economic and social changes of the ...
Alberto De Capua
doaj   +1 more source

Topology-changing horizons at large D as Ricci flows

open access: yesJournal of High Energy Physics, 2019
The topology-changing transition between black strings and black holes localized in a Kaluza-Klein circle is investigated in an expansion in the inverse of the number of dimensions D.
Roberto Emparan, Ryotaku Suzuki
doaj   +1 more source

Investigating Off-shell Stability of Anti-de Sitter Space in String Theory [PDF]

open access: yes, 2008
We propose an investigation of stability of vacua in string theory by studying their stability with respect to a (suitable) world-sheet renormalization group (RG) flow.
Adams A   +33 more
core   +1 more source

Singular Ricci flows I [PDF]

open access: yesActa Mathematica, 2017
final ...
Kleiner, Bruce, Lott, John
openaire   +4 more sources

Swampland, gradient flow and infinite distance

open access: yesJournal of High Energy Physics, 2020
In the first part of this paper we will work out a close and so far not yet noticed correspondence between the swampland approach in quantum gravity and geometric flow equations in general relativity, most notably the Ricci flow.
Alex Kehagias   +2 more
doaj   +1 more source

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