Results 1 to 10 of about 121,383 (124)

Einstein branes [PDF]

open access: yesJournal of High Energy Physics, 2011
typos corrected, 16 pages, 1 figure, to appear in ...
Thomas Van Riet   +2 more
openaire   +2 more sources

Autodual Einstein Versus Kähler–Einstein [PDF]

open access: yesGAFA Geometric And Functional Analysis, 2005
Typos ...
openaire   +3 more sources

The extended quasi-Einstein manifolds with generalised Ricci solitons [PDF]

open access: yesarXiv, 2022
As a generalization of Einstein manifolds, the nearly quasi-Einstein manifolds and pseudo quasi-Einstein manifolds are both interesting and useful in studying the general relativity. In this paper, we study the extended quasi-Einstein manifolds which derive from pseudo quasi-Einstein manifolds.
arxiv  

Einstein’s boxes [PDF]

open access: yesAmerican Journal of Physics, 2005
At the 1927 Solvay conference, Albert Einstein presented a thought experiment intended to demonstrate the incompleteness of the quantum mechanical description of reality. In the following years, the experiment was modified by Einstein, de Broglie, and several other commentators into a simple scenario involving the splitting in half of the wave function
openaire   +3 more sources

Einstein solvmanifolds and the pre-Einstein derivation [PDF]

open access: yesTransactions of the American Mathematical Society, 2011
An Einstein nilradical is a nilpotent Lie algebra, which can be the nilradical of a metric Einstein solvable Lie algebra. The classification of Riemannian Einstein solvmanifolds (possibly, of all noncompact homogeneous Einstein spaces) can be reduced to determining, which nilpotent Lie algebras are Einstein nilradicals and to finding, for every ...
openaire   +3 more sources

Generalized Eta-Einstein and $(κ,μ)$-structures [PDF]

open access: yesarXiv, 2023
Generalized $(\kappa ,\mu )$ structures occur in dimension 3 only. In this dimension 3, only K-contact structures can occur as generalized Eta-Einstein. On closed manifolds, Eta-Einstein, K-contact structures which are not D-homothetic to Einstein structures are almost regular.
arxiv  

Homogeneous Einstein metrics on Euclidean spaces are Einstein solvmanifolds [PDF]

open access: yesGeom. Topol. 26 (2022) 899-936, 2018
We show that homogeneous Einstein metrics on Euclidean spaces are Einstein solvmanifolds, using that they admit periodic, integrally minimal foliations by homogeneous hypersurfaces. For the geometric flow induced by the orbit-Einstein condition, we construct a Lyapunov function based on curvature estimates which come from real GIT.
arxiv   +1 more source

Einstein

open access: yesCaderno Brasileiro de Ensino de Física, 2014
Einstein
openaire   +4 more sources

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