Results 21 to 30 of about 741,369 (310)
The Geometry of Almost Einstein (2,3,5) Distributions [PDF]
, 2017 We analyze the classic problem of existence of Einstein metrics in a given conformal structure for the class of conformal structures inducedf Nurowski's construction by (oriented) (2,3,5) distributions.
Sagerschnig, Katja, Willse, Travis
core +1 more source
Beta-almost Ricci solitons on Sasakian 3-manifolds
Cubo, 2019 In this paper we characterize the Sasakian 3-manifolds admitting β-almost Ricci solitons whose potential vector field is a contact vector field. Among others we prove that a β-almost Ricci soliton whose potential vector field is a contact vector field on
Pradip Majhi, Debabrata Kar
doaj +1 more source
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 +2 more
core +1 more source
Journal of High Energy Physics, 2011 typos corrected, 16 pages, 1 figure, to appear in ...
Chemissany, Wissam +2 more
openaire +2 more sources
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 +4 more
core +1 more source
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
core +2 more sources
Einstein e a teoria de caos quântico
Revista Brasileira de Ensino de FísicaO trabalho de Einstein intitulado Sobre o teorema quântico de Sommerfeld e de Epstein [1,2], publicado em 1917, propõe uma generalização da regra de quantização de Bohr, Sommerfeld e Epstein para sistemas multidimensionais integráveis.
M.A.M. de Aguiar
doaj +1 more source
On the spherically symmetric Einstein-Yang-Mills-Higgs equations in Bondi coordinates
, 2012 We revisit and generalize, to the Einstein-Yang-Mills-Higgs system, previous results of D. Christodoulou and D. Chae concerning global solutions for the Einstein-scalar field and the Einstein-Maxwell-Higgs equations.
Tadmon, Calvin +1 more
core +1 more source
ZUR ELEKTRODYNAMIK BEWEGTER KÖRPER (facsimile)
Revista Brasileira de História da Matemática, 2020 ZUR ELEKTRODYNAMIK BEWEGTER KÖRPER (facsimile)
Albert Einstein
doaj +1 more source
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 +14 more
core +1 more source