Results 1 to 10 of about 559,264 (23)

Examples of Einstein manifolds in odd dimensions [PDF]

, 2011
We construct Einstein metrics of non-positive scalar curvature on certain solid torus bundles over a Fano Kahler-Einstein manifold. We show, among other things, that the negative Einstein metrics are conformally compact, and the Ricci-flat metrics have ...
Chen, Dezhong
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Moving Observers in an Isotropic Universe [PDF]

, 2006
We show how the anisotropy resulting from the motion of an observer in an isotropic universe may be determined by measurements. This provides a means to identify inertial frames, yielding a simple resolution to the twins paradox of relativity theory.
A. Einstein, A. Einstein, C. S. Unnikrishnan, Subhash Kak   +3 more
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Boundary conditions for hyperbolic formulations of the Einstein equations [PDF]

, 2003
In regards to the initial-boundary value problem of the Einstein equations, we argue that the projection of the Einstein equations along the normal to the boundary yields necessary and appropriate boundary conditions for a wide class of equivalent ...
Abrahams A M, Anderson A, Arnowitt R, Baumgarte T W, Frittelli S, Frittelli S, Frittelli S, Gustaffson B, Kidder L E, Lehner L, Reula O A, Roberto G mez, Shibata M, Shinkai H, Simonetta Frittelli, Stewart J M, Szilágyi B, Weinberg S, York J W   +18 more
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On Einstein clusters as galactic dark matter halos [PDF]

, 2007
We consider global and gravitational lensing properties of the recently suggested Einstein clusters of WIMPs as galactic dark matter halos. Being tangential pressure dominated, Einstein clusters are strongly anisotropic systems which can describe any ...
Boehmer, C. G., Harko, T.
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Variability of fundamental constants

, 2002
If the fine structure constant is not really constant, is this due to a variation of $e$, $\hbar$, or $c$? It is argued that the only reasonable conclusion is a variable speed of light.Comment: preliminary draft, comments ...
ASHER PERES, Einstein A., Einstein A., Einstein A., Schouten J. A.   +4 more
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Lorentz group theory and polarization of the light

, 2011
Some facts of the theory of the Lorentz group are specified for looking at the problems of light polarization optics in the frames of vector Stokes-Mueller and spinor Jones formalism.
A. Einstein, A. Einstein, V. M. Red’kov   +2 more
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Black Holes with Yang-Mills Hair [PDF]

, 1998
In Einstein-Maxwell theory black holes are uniquely determined by their mass, their charge and their angular momentum. This is no longer true in Einstein-Yang-Mills theory. We discuss sequences of neutral and charged SU(N) Einstein-Yang-Mills black holes,
Kleihaus, B., Kunz, J., Sood, A., Wirschins, M.   +3 more
core   +2 more sources

Quasi-Einstein metrics on hypersurface families [PDF]

, 2012
We construct quasi-Einstein metrics on some hypersurface families. The hypersurfaces are circle bundles over the product of Fano, K\"ahler-Einstein manifolds.
Hall, Stuart James
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Late-time behaviour of the Einstein-Vlasov system with Bianchi I symmetry

, 2010
The late-time behaviour of the Einstein-dust system is well understood for homogeneous spacetimes. For the case of Bianchi I we have been able to show that the late-time behaviour of the Einstein-Vlasov system is well approximated by the Einstein-dust ...
Calogero S, Damour T, Ernesto Nungesser, Heinzle J M, Nungesser E, Rendall A D, Rendall A D, Rendall A D, Sandin P   +8 more
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Doubly Special Relativity with a minimum speed and the Uncertainty Principle

, 2017
The present work aims to search for an implementation of a new symmetry in the space-time by introducing the idea of an invariant minimum speed scale ($V$).
CLÁUDIO NASSIF, Einstein A., Einstein A., Einstein A., Einstein A., Einstein A., Einstein A., FitzGerald G. F., Jordan P., Kaluza T., Licata I., Mach E., Magueijo J., Poincaré H., Schrödinger E.   +14 more
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