Results 31 to 40 of about 2,965,710 (272)
Lightlike reduction of the M5 brane
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
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]
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
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
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On the existence of Killing vector fields [PDF]
9 pages, no figure, to appear in Class.
openaire +3 more sources
Killing Reeb vector fields on some almost contact manifolds [PDF]
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]
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]
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]
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]
35 pages, 3 ...
DAPPIAGGI, CLAUDIO +2 more
openaire +3 more sources

