Results 11 to 20 of about 8,364,083 (287)

Closed conformal vector fields on pseudo-Riemannian manifolds [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
We give here a geometric proof of the existence of certain local coordinates on a pseudo-Riemannian manifold admitting a closed conformal vector field.
D. A. Catalano
doaj   +6 more sources

Local dynamics of conformal vector fields [PDF]

open access: yesGeometriae Dedicata, 2011
The aim of the paper is to understand the local forms of conformal vector fields in the neighborhood of a singularity. We begin a general study in this direction, for any pseudo-Riemannian type, and give a complete answer in the Riemannian case. This is done using geometric methods, and studying local dynamics of sequences of conformal transformations.
Frances, Charles, Charles Frances
openaire   +4 more sources

Conformal Vector Fields and Null Hypersurfaces [PDF]

open access: yesResults in Mathematics, 2022
Abstract We give conditions for a conformal vector field to be tangent to a null hypersurface. We particularize to two important cases: a Killing vector field and a closed and conformal vector field. In the first case, we obtain a result ensuring that a null hypersurface is a Killing horizon.
Cyriaque Atindogbé, Benjamín Olea
openaire   +4 more sources

Conformal vector fields on lcK manifolds [PDF]

open access: yesMathematical Research Letters, 2023
We show that any conformal vector field on a compact lcK manifold is Killing with respect to the Gauduchon metric. Furthermore, we prove that any conformal vector field on a compact lcK manifold whose Kähler cover is neither flat, nor hyperkähler, is holomorphic.
Moroianu, Andrei, Pilca, Mihaela
openaire   +3 more sources

Killing Vector Fields in Generalized Conformal β-Change of Finsler Spaces [PDF]

open access: yesJournal of Mathematics, 2015
We consider a Finsler space equipped with a Generalized Conformal β-change of metric and study the Killing vector fields that correspond between the original Finsler space and the Finsler space equipped with Generalized Conformal β-change of metric.
Mallikarjun Yallappa Kumbar   +3 more
doaj   +2 more sources

Pseudo-Riemannian Lie groups admitting left-invariant conformal vector fields [PDF]

open access: yesComptes Rendus. Mathématique, 2020
Let $G$ be a Lorentzian Lie group or a pseudo-Riemannian Lie group of type $(n-2,2)$. If $G$ admits a non-Killing left-invariant conformal vector field, then $G$ is solvable.
Zhang, Hui, Chen, Zhiqi
doaj   +2 more sources

Hidden conformal symmetry for vector field on various black hole backgrounds

open access: yesJournal of High Energy Physics, 2018
Hidden conformal symmetries of scalar field on various black hole backgrounds have been investigated for years, but whether those features hold for other fields are still open questions. Recently, with proper assumptions, Lunin achieved to the separation
Changfu Shi   +2 more
doaj   +3 more sources

Conformal vector fields in symmetric and conformal symmetric spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
Consequences of the existence of conformal vector fields in (locally) symmetric and conformal symmetric spaces, have been obtained. An attempt has been made for a physical interpretation of the consequences in the framework of general relativity.
Ramesh Sharma
openaire   +4 more sources

The zero set of conformal vector fields

open access: yes, 2010
We show that every connected component of the zero set of a conformal vector field on a Riemannian manifold is totally ...
Moroianu, Andrei, Ornea, Liviu
core   +4 more sources

Bi-conformal vector fields and their applications [PDF]

open access: yesClassical and Quantum Gravity, 2004
Replaced version with some changes in the terminology and a new theorem.
García-Parrado, Alfonso   +1 more
openaire   +3 more sources

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