Cosmological textures
type: Item
instance of: scholarly article
title: Cosmological textures
zbMATH Open document ID: 0613.53053
DOI: 10.1007/BF00767272
author: Yanyan Li
published in: General Relativity and Gravitation
publication date: 1987-01-01T00:00:00Z
review text: Can the spatially closed Friedmann-Robertson-Walker universe (FRW) look like the flat or the open ones? In this paper the topological defects called textures, which are nonlocalized and stable solutions of classical equations of motion on a spatial manifold with compact dimensions, have been the effect responsible for the simulation of flat or open FRW universes from the originally closed one. The paper treats the case of gauge textures in two examples. In the first one a complex spinor field is considered, which leads to a nonphysical texture. In the second one, the entire O(4) symmetry is gauged. A non- abelian magnetic field is found everywhere in the universe, however it is wound away through spatial rotations and unbroken isorotations. The energy density redshifts with \(a^{-4}\) and so the effects causing the closed FRW universe to look like a flat or an open one do not occur any longer. The gauging of textures are shortly analyzed in the paper. The main result is the study of global textures in the \(k=+1\) FRW universe. Further investigations concerning the following questions are pointed out in the article. i) How can astrophysical observations discard certain phenomena connected with these models? ii) What role do fermions play in these models?
Mathematics Subject Classification ID: 53C80
Mathematics Subject Classification ID: 83F05
Mathematics Subject Classification ID: 83C20
zbMATH DE Number: 3992389
zbMATH Keywords: symmetry breaking
zbMATH Keywords: Friedmann-Robertson-Walker universe
zbMATH Keywords: gauge textures
zbMATH Keywords: spinor field
zbMATH Keywords: magnetic field
reviewed by: Waldir L. Roque
MaRDI profile type: Publication
cites work: Cosmic strings and domain walls
full work available at URL: https://doi.org/10.1007/bf00767272
OpenAlex ID: W4235296284
description: scientific article; zbMATH DE number 3992389