skip to main content

SciTech ConnectSciTech Connect

Title: Fully nonlinear and exact perturbations of the Friedmann world model: non-flat background

We extend the fully non-linear and exact cosmological perturbation equations in a Friedmann background universe to include the background curvature. The perturbation equations are presented in a gauge ready form, so any temporal gauge condition can be adopted freely depending on the problem to be solved. We consider the scalar, and vector perturbations without anisotropic stress. As an application, we analyze the equations in the special case of irrotational zero-pressure fluid in the comoving gauge condition. We also present the fully nonlinear formulation for a minimally coupled scalar field.
Authors:
 [1]
  1. Korea Astronomy and Space Science Institute, Daejeon, 305-348 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22373448
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 07; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANISOTROPY; EQUATIONS; PERTURBATION THEORY; SCALAR FIELDS; SCALARS; UNIVERSE; VECTORS