Results 61 to 70 of about 727 (144)

The anholonomic frame and connection deformation method for constructing off-diagonal solutions in (modified) Einstein gravity and nonassociative geometric flows and Finsler–Lagrange–Hamilton theories

European Physical Journal C: Particles and Fields
This article is a status report on the anholonomic frame and connection deformation method, AFCDM, for constructing generic off-diagonal exact and parametric solutions in general relativity, GR, relativistic geometric flows and modified gravity theories,
Laurenţiu Bubuianu, Julia O. Seti, Douglas Singleton, Panayiotis Stavrinos, Sergiu I. Vacaru, Elşen Veli Veliev   +5 more
doaj   +1 more source

Nonmetric geometric flows and quasicrystalline topological phases for dark energy and dark matter in $$f(Q)$$ f ( Q ) cosmology

European Physical Journal C: Particles and Fields
We elaborate on nonmetric geometric flow theory and metric-affine gravity with applications in modern cosmology. Two main motivations for our research follow from the facts that (1) cosmological models for f(Q) modified gravity theories, MGTs, are ...
Laurenţiu Bubuianu, Erik Nurlan, Julia O. Seti, Sergiu I. Vacaru, Elşen Veli Veliev   +4 more
doaj   +1 more source

Ricci flow coupled with harmonic map flow [PDF]

Annales scientifiques de l'École normale supérieure, 2012
We investigate a new geometric flow which consists of a coupled system of the Ricci flow on a closed manifold M with the harmonic map flow of a map phi from M to some closed target manifold N with a (possibly time-dependent) positive coupling constant alpha.
openaire   +4 more sources

Contact Ricci flow

, 2011
This paper has been withdrawn by the author due to a serious gap in defining contact Ricci ...
openaire   +2 more sources

The Ricci flow for nilmanifolds

Journal of Modern Dynamics, 2010
We consider the Ricci flow for simply connected nilmanifolds, which translates to a Ricci flow on the space of nilpotent metric Lie algebras. We consider the evolution of the inner product and the evolution of structure constants, as well as the evolution of these quantities modulo rescaling.
openaire   +2 more sources

Ricci expanders and type III Ricci flow

, 2010
8 ...
openaire   +2 more sources

Beyond the Meal: Trophic Controls by Pelagic and Demersal Chondrichthyes in Two Different Mediterranean Marine Food Webs. [PDF]

Ecol Evol
Ricci P, Finotto L, Barausse A, Zampieri C, Mazzoldi C, Cipriano G, De Luca FP, Carlucci R.   +7 more
europepmc   +1 more source

Underlying Geometric Flow in Hamiltonian Evolution. [PDF]

Entropy (Basel)
Elgressy G, Horwitz L.
europepmc   +1 more source

Ricci flow with Ricci curvature and volume bounded below

Mathematische Annalen
We show that a simply-connected closed four-dimensional Ricci flow whose Ricci curvature is uniformly bounded below and whose volume does not approach zero must converge to a $C^{0}$ orbifold at any finite-time singularity, so has an extension through the singularity via orbifold Ricci flow.
openaire   +2 more sources

JKO schemes with general transport costs. [PDF]

Calc Var Partial Differ Equ
Rankin C, Wong TL.
europepmc   +1 more source