Results 131 to 140 of about 29,467 (233)

$L^p$-stability and positive scalar curvature rigidity of Ricci-flat ALE\n manifolds [PDF]

, 2020
Klaus Kroencke, Oliver Lindblad Petersen
openalex   +1 more source

Ricci-flat metrics on Calabi-Yau manifolds

We study the space of Ricci-flat Kahler metrics on a given Calabi-Yau manifold, pose a number of questions about their possible degenerations, and survey some recent results on these questions.
openaire   +2 more sources

Conformal metric perturbations and boundary term as physical source

European Physical Journal C: Particles and Fields
In the context of the Relativistic Quantum Geometry formalism, where the cosmological constant is promoted to a dynamical variable by attributing it a geometric interpretation as a result of a flux on the boundary of a manifold and establishing a ...
Juan Ignacio Musmarra, Claudia Moreno, Rafael Hernández-Jiménez   +2 more
doaj   +1 more source

Leaf of leaf foliation and Beltrami parametrization in d > 2 dimensional gravity

Nuclear Physics B
This work establishes the existence of a covariant “Beltrami vielbein” in dimensions d>2, generalizing the well-known d=2 case. The definition of this vielbein is motivated by a sub-foliation structure of the Arnowitt–Deser–Misner (ADM) slices of a d ...
Laurent Baulieu
doaj   +1 more source

Transit cosmological models in $$F(R,{\bar{T}})$$ F ( R , T ¯ ) gravity theory

European Physical Journal C: Particles and Fields
In the present paper, we investigate some exact cosmological models in $$F(R,{\bar{T}})$$ F ( R , T ¯ ) gravity theory. We have considered the arbitrary function $$F(R, {\bar{T}})=R+\lambda {\bar{T}}$$ F ( R , T ¯ ) = R + λ T ¯ where $$\lambda $$ λ is an
Dinesh Chandra Maurya, Ratbay Myrzakulov
doaj   +1 more source

Curvature-induced dynamical effective spacetime dimension in an extension of general relativity

European Physical Journal C: Particles and Fields
We propose a covariant extension of general relativity in which the local effective dimension of spacetime is promoted to a dynamical, curvature-induced field on an underlying four-dimensional manifold.
L. Yıldız, D. Kaykı, E. Güdekli
doaj   +1 more source

Conformally flat manifolds with nonnegative Ricci curvature [PDF]

, 2006
Gilles Carron, Marc Herzlich
openalex   +1 more source

Closed generalized Einstein manifolds with radially flat Ricci curvature [PDF]

, 2021
Seungsu Hwang, Márcio S. Santos, Gabjin Yun   +2 more
openalex   +1 more source

Diffusion Curvature for Estimating Local Curvature in High Dimensional Data. [PDF]

Adv Neural Inf Process Syst, 2022
Bhaskar D, MacDonald K, Fasina O, Thomas D, Rieck B, Adelstein I, Krishnaswamy S.   +6 more
europepmc   +1 more source

Generalized teleparallel de Sitter geometries. [PDF]

Eur Phys J C Part Fields, 2023
Coley AA, Landry A, van den Hoogen RJ, McNutt DD.   +3 more
europepmc   +1 more source