Richard Kerner and Salvatore Vitale 2009 Class. Quantum Grav. 26 235007 doi:10.1088/0264-9381/26/23/235007
Richard Kerner and Salvatore Vitale
Show affiliationsWe show how approximate radiative solutions of Einstein's equations can be constructed using small deformations of Einstein spacetimes embedded into a pseudo-Euclidean flat space of higher dimension. Infinitesimal deformations are seen then as vector fields in EN. All geometrical quantities can be then expressed in terms of embedding functions zA and their deformations
. Then we require the deformations to keep Einstein equations satisfied up to a given order in ε. The system obtained is then analyzed in particular cases of the Minkowski and Schwarzschild manifolds taken as a starting point, and solutions of deformations of Einstein's equations displaying radiative behavior are found up to the third order of expansion in small parameter ε.
95.30.Sf Relativity and gravitation
04.20.Gz Spacetime topology, causal structure, spinor structure
83C05 Einstein's equations (general structure, canonical formalism, Cauchy problems)
Issue 23 (7 December 2009)
Received 15 April 2009, in final form 28 September 2009
Published 6 November 2009
Richard Kerner and Salvatore Vitale 2009 Class. Quantum Grav. 26 235007