Results 81 to 90 of about 1,179 (183)

Mass-induced instability of SAdS black hole in Einstein–Ricci cubic gravity

European Physical Journal C: Particles and Fields, 2018
We perform the stability analysis of Schwarzschild-AdS (SAdS) black hole in the Einstein–Ricci cubic gravity. It shows that the Ricci tensor perturbations exhibit unstable modes for small black holes.
Yun Soo Myung
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Some Properties of Generalized Einstein Tensor for a Pseudo-Ricci Symmetric Manifold

Advances in Mathematical Physics, 2020
The object of the paper is to study some properties of the generalized Einstein tensor GX,Y which is recurrent and birecurrent on pseudo-Ricci symmetric manifolds PRSn. Considering the generalized Einstein tensor GX,Y as birecurrent but not recurrent, we
S. Aynur Uysal, Hülya Bağdatlı Yılmaz   +1 more
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New Way to Calculate Ricci Tensor and Ricci Scalar

Journal of High Energy Physics, Gravitation and Cosmology, 2019
In the theory of general relativity, the finding of the Einstein Field Equation happens in a complex mathematical operation, a process we don’t need any more. Through a new theory in vector analysis, we’ll see that we can calculate the components of the Ricci tensor, Ricci scalar, and Einstein Field Equation directly in an easy way without the need to ...
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Symmetry and pseudosymmetry properties with Ricci soliton of the Reissner-Nordström-de Sitter spacetime

Nuclear Physics B
The primary objective of the article is to investigate the symmetry and pseudosymmetry properties of the Reissner-Nordström-de Sitter (briefly, RNdS) spacetime. The secondary aim of the paper is to explore the notion of Ricci solitons in RNdS spacetimes.
Absos Ali Shaikh, Kamiruzzaman
doaj   +1 more source

Comparison geometry for the Bakry-Emery Ricci tensor

Journal of Differential Geometry, 2009
For Riemannian manifolds with a measure $(M,g, e^{-f} dvol_g)$ we prove mean curvature and volume comparison results when the $\infty$-Bakry-Emery Ricci tensor is bounded from below and $f$ is bounded or $\partial_r f$ is bounded from below, generalizing the classical ones (i.e. when $f$ is constant). This leads to extensions of many theorems for Ricci
Wei, Guofang, Wylie, Will
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On generalized complex space forms satisfying certain curvature conditions

Karpatsʹkì Matematičnì Publìkacìï, 2016
We study Ricci soliton $(g,V,\lambda)$ of generalized complex space forms when the Riemannian, Bochner and $W_{2}$ curvature tensors satisfy certain curvature conditions like semi-symmetric, Einstein semi-symmetric, Ricci pseudo symmetric and Ricci ...
M.M. Praveena, C.S. Bagewadi
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Geometric Perspective of Relativistic Bulk Viscous Fluid String Spacetime

Axioms
The goal of the article is to examine the behavior of bulk viscous fluid string spacetime with a fluid density of the bulk viscous fluid string ρ and a tension of the bulk viscous fluid string λ.
Mohd Danish Siddiqi, Ibrahim Al-Dayel
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Torsion and Ricci tensor for non-linear connections

Differential Geometry and its Applications, 1991
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Connections with Skew-Symmetric Ricci Tensor on Surfaces [PDF]

Results in Mathematics, 2008
22 ...
openaire   +2 more sources

Geometry of ℝ+ × E 3(3) exceptional field theory and F-theory

Journal of High Energy Physics, 2019
We consider a non trivial solution to the section condition in the context of ℝ+ ×E 3(3) exceptional field theory and show that allowing fields to depend on the additional stringy coordinates of the extended internal space permits to describe the ...
Lilian Chabrol
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