Results 41 to 50 of about 426,506 (223)
Generalized Sasakian-space-forms and Ricci almost solitons with a conformal killing vector field
, 2016 The present paper deals with the study of generalized Sasakian-space-forms whose metric is Ricci almost soliton with a conformal killing vector field.
D. Chakraborty, S. Hui
semanticscholar +1 more source
Killing Vector Fields in Generalized Conformal β-Change of Finsler Spaces
Journal 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
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Concircular vector fields for Kantowski Sachs and Bianchi type III spacetimes
, 2017 This paper intends to obtain concircular vector fields of Kantowski Sachs and Bianch type III spacetimes. For this purpose, ten conformal Killing equations and their general solution in the form of conformal Killing vector fields are derived along with ...
Ali, Ahmad T +2 more
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Inflation in a self-interacting gas universe [PDF]
, 1998 We show that a de Sitter spacetime is a solution of Einstein's field equations with the energy momentum tensor of a self-interacting, classical Maxwell-Boltzmann gas in collisional equilibrium.
Balakin, Alexander B., Zimdahl, Winfried
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Null vectors in logarithmic conformal field theory [PDF]
Proceedings of Non-perturbative Quantum Effects 2000 — PoS(tmr2000), 2000 The representation theory of the Virasoro algebra in the case of a logarithmic conformal field theory is considered. Here, indecomposable representations have to be taken into account, which has many interesting consequences. We study the generalization of null vectors towards the case of indecomposable representation modules and, in particular, how ...
openaire +2 more sources
On the Tachibana numbers of closed manifolds with pinched negative sectional curvature
Дифференциальная геометрия многообразий фигур, 2020 Conformal Killing form is a natural generalization of conformal Killing vector field. These forms were extensively studied by many geometricians. These considerations were motivated by existence of various applications for these forms.
S.E. Stepanov, I. I. Tsyganok
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Tangent bundle geometry from dynamics: application to the Kepler problem
, 2016 In this paper we consider a manifold with a dynamical vector field and inquire about the possible tangent bundle structures which would turn the starting vector field into a second order one.
Cariñena, J. F. +3 more
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Characterizing spheres by an immersion in Euclidean spaces
Arab Journal of Mathematical Sciences, 2017 In this paper we study compact immersed orientable hypersurfaces in the Euclidean space Rn+1 and show that suitable restrictions on the tangential and normal components of the immersion give different characterizations of the spheres.
Sharief Deshmukh, Ibrahim Al-Dayel
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Symmetries of supergravity backgrounds and supersymmetric field theory
Journal of High Energy Physics, 2020 In four spacetime dimensions, all N $$ \mathcal{N} $$ = 1 supergravity-matter systems can be formulated in the so-called U(1) superspace proposed by Howe in 1981.
Sergei M. Kuzenko +1 more
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European Physical Journal C: Particles and Fields, 2023 We consider dark energy models obtained from the general conformal transformation of the Kropina metric, representing an $$(\alpha , \beta )$$ ( α , β ) -type Finslerian geometry, constructed as the ratio of the square of a Riemannian metric $$\alpha ...
Rattanasak Hama +2 more
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