Results 51 to 60 of about 576,868 (362)
Scalar hair from a derivative coupling of a scalar field to the Einstein tensor [PDF]
, 2011 We consider a gravitating system of vanishing cosmological constant consisting of an electromagnetic field and a scalar field coupled to the Einstein tensor.
Theodoros Kolyvaris +3 more
semanticscholar +1 more source
Rastall gravity is equivalent to Einstein gravity
Physics Letters B, 2018 Rastall gravity, originally developed in 1972, is currently undergoing a significant surge in popularity. Rastall gravity purports to be a modified theory of gravity, with a non-conserved stress–energy tensor, and an unusual non-minimal coupling between ...
Matt Visser
doaj +1 more source
New symmetry for the imperfect fluid
European Physical Journal C: Particles and Fields, 2020 We will address the existence of a new symmetry for an imperfect fluid by introducing local four-velocity gauge-like transformations for the case when there is vorticity.
Alcides Garat
doaj +1 more source
Nonlinear massive spin-two field generated by higher derivative gravity [PDF]
, 2002 We present a systematic exposition of the Lagrangian field theory for the massive spin-two field generated in higher-derivative gravity. It has been noticed by various authors that this nonlinear field overcomes the well known inconsistency of the theory
Alonso +73 more
core +2 more sources
When scalar field is kinetically coupled to the Einstein tensor [PDF]
, 2010 We explore the cosmic evolution of a scalar field with the kinetic term coupled to the Einstein tensor. We find that, in the absence of other matter sources or in the presence of only pressureless matter, the scalar behaves as pressureless matter and the
Changjun Gao
semanticscholar +1 more source
Exotic solutions in Einstein-antisymmetric tensor theory [PDF]
Physics Letters B, 1996 Classical solutions of the self-interacting, non-abelian antisymmetric tensor gauge theory of Freedman and Townsend coupled to Einstein gravity is discussed. Particularly, it is demonstrated that the theory admits a classical metric solution which, depending on the value of the gauge coupling parameter of the theory, exhibits a black hole with an ...
openaire +2 more sources
Semi-reducible pseudo-Riemannian spaces with additional conditions
Pracì Mìžnarodnogo Geometričnogo CentruWe consider semi-reducible pseudo-Riemannian spaces with algebraic conditions on the Ricci tensor and the Riemann tensor. For almost Einstein and weakly recurrent spaces we find the type of tensor characteristic of semi-reducibility.
Yuliia Fedchenko +2 more
doaj +1 more source
Spektra: Jurnal Fisika dan Aplikasinya, 2017 Abstrak Studi yang berkaitan dengan braneworld dimensi lima dengan brane tunggal yang terletak di telah diakukan, model Randall-Sundrum dan modifikasi Randall-Sundrum. Aspek yang ditinjau adalah skalar Ricci, persamaan Einstein, tensor energi-momentum,
Dewi Wulandari
doaj +1 more source
Decomposition of geometric perturbations
, 2008 For an infinitesimal deformation of a Riemannian manifold, we prove that the scalar, vector, and tensor modes in decompositions of perturbations of the metric tensor, the scalar curvature, the Ricci tensor, and the Einstein tensor decouple if and only if
Arnowitt +9 more
core +1 more source
Gauging the full R symmetry group in five-dimensional, N=2 Yang-Mills Einstein tensor supergravity [PDF]
, 2000 We show that certain five dimensional, N=2 Yang-Mills/Einstein supergravity theories admit the gauging of the full R-symmetry group, SU(2)_R, of the underlying N=2 Poincare superalgebra.
M. Gunaydin, M. Zagermann
semanticscholar +1 more source