Scalar perturbations in a Friedmann-like metric with non-null Weyl tensor

Autor:	Santos, Grasiele B., Bittencourt, Eduardo, Salim, José M.
Rok vydání:	2013
Předmět:	General Relativity and Quantum Cosmology Astrophysics - Cosmology and Nongalactic Astrophysics
Zdroj:	JCAP 06 (2015) 013
Druh dokumentu:	Working Paper
DOI:	10.1088/1475-7516/2015/06/013
Popis:	In a previous work the authors have solved the Einstein equations of General Relativity for a class of metrics with constant spatial curvature, where it was found a non vanishing Weyl tensor in the presence of a primordial magnetic field with an anisotropic pressure component. Here, we perform the perturbative analysis of this model in order to study the gravitational stability under linear scalar perturbations. For this purpose, we take the Quasi-Maxwellian formalism of General Relativity as our framework, which offers a naturally covariant and gauge-invariant approach to deal with perturbations that are directly linked to observational quantities. Comment: 14 pages, 1 figure, improved version with a new analysis of the large wavelength limit. The current version matches the published one
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1308.5178 Zobrazit plný text záznamu View this record from Arxiv