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A Superintegrable Quantum Field Theory. [PDF]

Commun Math Phys
De Clerck M, Evnin O.
europepmc   +1 more source

Weyl Manifolds and Einstein-Weyl Manifolds

Weyl Manifolds and Einstein-Weyl Manifolds
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On pseudo quasi-Einstein manifolds [PDF]

Periodica Mathematica Hungarica, 2009
A type of non-flat semi-Riemannian manifolds, called pseudo quasi-Einstein manifold, is introduced and studied in detail. The quasi-Einstein manifolds are well-known, and are relevant in general relativity: Robertson-Walker spacetimes belong to this class.
Uday Chand De, Mallick, Sahanous, De, Uday Chand, Sahanous Mallick, Absos Ali Shaikh, Absos Shaikh   +5 more
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Generalized Einstein tensor for a Weyl manifold and its applications

Acta Mathematica Sinica, English Series, 2013
It is well known that the Einstein tensor G for a Riemannian manifold defined by R (alpha) (beta) = g (beta gamma) R (gamma I +/-) where R (gamma I +/-) and R are respectively the Ricci tensor and the scalar curvature of the manifold plays an important ...
Abdülkadir Özdeğer, Özdeğer, Abdülkadir   +1 more
exaly   +2 more sources

Studies of Some Curvature Operators in a Neighborhood of an Asymptotically Hyperbolic Einstein Manifold

Advances in Mathematics, 2002
On an asymptotically hyperbolic Einstein manifold (M,g0) for which the Yamabe invariant of the conformal structure on the boundary at infinity is nonnegative, we show that the operators of Ricci curvature, and of Einstein curvature, are locally ...
Erwann Delay
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On quasi Einstein manifolds

Periodica Mathematica Hungarica, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
U. C. De, Gopal Chandra Ghosh
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Rigidity of Einstein manifolds and generalized quasi-Einstein manifolds

Annales Polonici Mathematici, 2015
Summary: We discuss the rigidity of Einstein manifolds and generalized quasi-Einstein manifolds. We improve a pinching condition used in a theorem on the rigidity of compact Einstein manifolds. Under an additional condition, we confirm a conjecture on the rigidity of compact Einstein manifolds.
Deng, Yi Hua, Luo, Li Ping, Zhou, Li Jun
openaire   +1 more source