Results 31 to 40 of about 2,965,710 (272)

Lightlike reduction of the M5 brane

open access: yesJournal of High Energy Physics, 2023
We obtain a Lagrangian for a lightlike dimensional reduction of the nonabelian M5 brane theory in six dimension. We assume that the six-manifold has at least one conformal Killing spinor and two commuting lightlike Killing vector fields, and we perform ...
Andreas Gustavsson
doaj   +1 more source

New application of the Killing vector field formalism: modified periodic potential and two-level profiles of the axionic dark matter distribution

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We consider the structure of halos of the axionic dark matter, which surround massive relativistic objects with static spherically symmetric gravitational field and monopole-type magneto-electric fields.
Alexander B. Balakin, Dmitry E. Groshev
doaj   +1 more source

Geometry of Ricci solitons admitting a new geometric vector field [PDF]

open access: yesAUT Journal of Mathematics and Computing
In the present paper, we introduce a new geometric vector field (it will be called semi-Killing field) on semi-Riemannaian manifolds. A complete classification of semi-Killing vector fields on 3-dimensional Walker manifolds will be derived.
Farzaneh Shamkhali   +2 more
doaj   +1 more source

A classification of Bianchi Type I solutions via conformal vector fields and energy conditions in modified teleparallel gravity

open access: yesResults in Physics, 2023
The focus of this research is to investigate conformal vector fields (CVFs) of Bianchi type I space–times in modified teleparallel gravity (MTG). In order to determine such vector fields, we make a classification of said space–times.
Shabeela Malik   +5 more
doaj   +1 more source

On the existence of Killing vector fields [PDF]

open access: yesClassical and Quantum Gravity, 1999
9 pages, no figure, to appear in Class.
openaire   +3 more sources

Killing Reeb vector fields on some almost contact manifolds [PDF]

open access: yesMathematica Bohemica
We discuss the geometric impact of a Killing vector field on certain almost contact manifolds with constant sectional curvatures. We prove that the additional structures given in A. De Nicola, G. Dileo, I. Yudin (2018) can be naturally constructed in the
Fortuné Massamba
doaj   +1 more source

UNIT KILLING VECTOR FIELDS ON NEARLY KÄHLER MANIFOLDS [PDF]

open access: yesInternational Journal of Mathematics, 2005
We study 6-dimensional nearly Kähler manifolds admitting a Killing vector field of unit length. In the compact case, it is shown that up to a finite cover there is only one geometry possible, that of the 3-symmetric space S3 × S3.
Moroianu, Andrei   +2 more
openaire   +5 more sources

On $g$-natural conformal vector fields on unit tangent bundles [PDF]

open access: yes, 2021
summary:We study conformal and Killing vector fields on the unit tangent bundle, over a Riemannian manifold, equipped with an arbitrary pseudo-Riemannian $g$-natural metric.
Amri, Noura   +1 more
core   +1 more source

Hydrodynamic Killing vector fields on surfaces [PDF]

open access: yes, 2023
Killing vector fields, which have their origins in Riemannian geometry, have recently garnered attention for their significance in understanding fluid flows on curved surfaces.
Shimizu, Yuuki
core   +1 more source

Deformations of Quantum Field Theories on Spacetimes with Killing Vector Fields [PDF]

open access: yesCommunications in Mathematical Physics, 2011
35 pages, 3 ...
DAPPIAGGI, CLAUDIO   +2 more
openaire   +3 more sources

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