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   Articles with "einstein manifolds" as a keyword



Uplifting dyonic AdS4 black holes on seven-dimensional Sasaki-Einstein manifolds

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recommendations! Published in 2020 at "Journal of High Energy Physics"

DOI: 10.1007/jhep03(2021)108

Abstract: Abstract We revisit non-rotating, dyonically charged, and supersymmetric AdS4 black holes, which are solutions of $$ \mathcal{N} $$ N = 2 gauged supergravity with vector- and hyper-multiplets. Uplifting the near horizon solutions to D =… read more here.

Keywords: black holes; einstein manifolds; seven dimensional; dimensional sasaki ... See more keywords
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Geometry of compact quasi-Einstein manifolds with boundary

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recommendations! Published in 2021 at "manuscripta mathematica"

DOI: 10.1007/s00229-021-01340-4

Abstract: In this article, we study the geometry of compact quasi-Einstein manifolds with boundary. We establish sharp boundary estimates for compact quasi-Einstein manifolds with boundary that improve some previous results. Moreover, we obtain a characterization theorem… read more here.

Keywords: einstein manifolds; manifolds boundary; compact quasi; geometry ... See more keywords

Rigidity of Einstein manifolds with positive Yamabe invariant

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recommendations! Published in 2024 at "Annals of Global Analysis and Geometry"

DOI: 10.1007/s10455-025-09996-x

Abstract: We provide optimal pinching results on closed Einstein manifolds with positive Yamabe invariant in any dimension, extending the optimal bound for the scalar curvature due to Gursky and LeBrun in dimension four. We also improve… read more here.

Keywords: yamabe invariant; einstein manifolds; positive yamabe; manifolds positive ... See more keywords
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On the Rigidity of Generalized Quasi-Einstein Manifolds

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recommendations! Published in 2019 at "Bulletin of the Malaysian Mathematical Sciences Society"

DOI: 10.1007/s40840-019-00788-8

Abstract: Here, it is shown a compact generalized quasi-Einstein or briefly a GQE manifold has the finite fundamental group. Next, under certain assumptions, a rigidity result shows that a compact GQE manifold is diffeomorphic to the… read more here.

Keywords: rigidity generalized; generalized quasi; einstein manifolds; quasi einstein ... See more keywords

On generalized quasi Einstein standard static spacetimes

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recommendations! Published in 2021 at "Journal of Geometry and Physics"

DOI: 10.1016/j.geomphys.2021.104366

Abstract: Abstract In the present paper, first, we characterize the standard static spacetimes satisfying certain Ricci-Hessian class type equations, such as generalized quasi Einstein manifolds, m-quasi Einstein manifolds, ( m , ρ ) -quasi Einstein manifolds,… read more here.

Keywords: einstein manifolds; einstein standard; static spacetimes; standard static ... See more keywords

Einstein manifolds with torsion and nonmetricity

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recommendations! Published in 2020 at "Physical Review D"

DOI: 10.1103/physrevd.101.044011

Abstract: Manifolds endowed with torsion and nonmetricity are interesting both from the physical and the mathematical points of view. In this paper, we generalize some results presented in the literature. We study Einstein manifolds (i.e., manifolds… read more here.

Keywords: part; torsion; nonmetricity; torsion nonmetricity ... See more keywords

Geometric and physical characteristics of mixed super quasi-Einstein manifolds

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recommendations! Published in 2019 at "International Journal of Geometric Methods in Modern Physics"

DOI: 10.1142/s0219887819501044

Abstract: The authors consider a mixed super quasi-Einstein manifold, which is conducive to understanding deeply the global characteristics of the universe including its topology. Firstly, the existence of such manifolds is ensured by an interesting example.… read more here.

Keywords: einstein manifolds; mixed super; super quasi; quasi einstein ... See more keywords

Multiply warped products with compact Einstein manifolds

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recommendations! Published in 2020 at "Quaestiones Mathematicae"

DOI: 10.2989/16073606.2020.1746933

Abstract: Abstract We study multiply warped products with compact Einstein manifolds. We obtain that there does not exist connected, compact Einstein multiply warped products if the scalar curvature is non-positive. It is also found that there… read more here.

Keywords: einstein manifolds; multiply warped; products compact; compact einstein ... See more keywords