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Volterra distortions, spinning strings, and cosmic defects
Cosmic strings, as topological spacetime defects, show striking resemblance to defects in solid continua: distortions, which can be classified into disclinations and dislocations, are line-like defects characterized by a delta function-valued curvature and torsion distribution giving rise to rotatio...
Autores principales: | , |
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Lenguaje: | eng |
Publicado: |
1996
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1088/0264-9381/14/5/017 http://cds.cern.ch/record/302147 |
_version_ | 1780889560830443520 |
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author | Puntigam, Roland A. Soleng, Harald H. |
author_facet | Puntigam, Roland A. Soleng, Harald H. |
author_sort | Puntigam, Roland A. |
collection | CERN |
description | Cosmic strings, as topological spacetime defects, show striking resemblance to defects in solid continua: distortions, which can be classified into disclinations and dislocations, are line-like defects characterized by a delta function-valued curvature and torsion distribution giving rise to rotational and translational holonomy. We exploit this analogy and investigate how distortions can be adapted in a systematic manner from solid state systems to Einstein--Cartan gravity. As distortions are efficiently described within the framework of a SO(3) {\;{\rlap{\supset}\times}\;} T(3) gauge theory of solid continua with line defects, we are led in a straightforward way to a Poincar\'e gauge approach to gravity which is a natural framework for introducing the notion of \emph{distorted spacetimes}. Constructing all ten possible distorted spacetimes, we recover, inter alia, the well-known exterior spacetime of a spin-polarized cosmic string as a special case of such a geometry. In a second step, we search for matter distributions which, in Einstein--Cartan gravity, act as sources of distorted spacetimes. The resulting solutions, appropriately matched to the distorted vacua, are cylindrically symmetric and are interpreted as spin-polarized cosmic strings and cosmic dislocations. |
id | cern-302147 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 1996 |
record_format | invenio |
spelling | cern-3021472019-09-30T06:29:59Zdoi:10.1088/0264-9381/14/5/017http://cds.cern.ch/record/302147engPuntigam, Roland A.Soleng, Harald H.Volterra distortions, spinning strings, and cosmic defectsGeneral Relativity and CosmologyCosmic strings, as topological spacetime defects, show striking resemblance to defects in solid continua: distortions, which can be classified into disclinations and dislocations, are line-like defects characterized by a delta function-valued curvature and torsion distribution giving rise to rotational and translational holonomy. We exploit this analogy and investigate how distortions can be adapted in a systematic manner from solid state systems to Einstein--Cartan gravity. As distortions are efficiently described within the framework of a SO(3) {\;{\rlap{\supset}\times}\;} T(3) gauge theory of solid continua with line defects, we are led in a straightforward way to a Poincar\'e gauge approach to gravity which is a natural framework for introducing the notion of \emph{distorted spacetimes}. Constructing all ten possible distorted spacetimes, we recover, inter alia, the well-known exterior spacetime of a spin-polarized cosmic string as a special case of such a geometry. In a second step, we search for matter distributions which, in Einstein--Cartan gravity, act as sources of distorted spacetimes. The resulting solutions, appropriately matched to the distorted vacua, are cylindrically symmetric and are interpreted as spin-polarized cosmic strings and cosmic dislocations.Cosmic strings, as topological spacetime defects, show striking resemblance to defects in solid continua: distortions, which can be classified into disclinations and dislocations, are line-like defects characterized by a delta function-valued curvature and torsion distribution giving rise to rotational and translational holonomy. We exploit this analogy and investigate how distortions can be adapted in a systematic manner from solid state systems to Einstein-Cartan gravity. As distortions are efficiently described within the framework of a $SO(3) {\rlap{$\supset$}\times}} T(3)$ gauge theory of solid continua with line defects, we are led in a straightforward way to a Poincar\'e gauge approach to gravity which is a natural framework for introducing the notion of distorted spacetimes. Constructing all ten possible distorted spacetimes, we recover, inter alia, the well-known exterior spacetime of a spin-polarized cosmic string as a special case of such a geometry. In a second step, we search for matter distributions which, in Einstein-Cartan gravity, act as sources of distorted spacetimes. The resulting solutions, appropriately matched to the distorted vacua, are cylindrically symmetric and are interpreted as spin-polarized cosmic strings and cosmic dislocations.CERN-TH-96-026CERN-TH-96-26COLOGNE-THP-1996-H06gr-qc/9604057CERN-TH-96-026COLOGNE-THP-1996-H-06oai:cds.cern.ch:3021471996-04-30 |
spellingShingle | General Relativity and Cosmology Puntigam, Roland A. Soleng, Harald H. Volterra distortions, spinning strings, and cosmic defects |
title | Volterra distortions, spinning strings, and cosmic defects |
title_full | Volterra distortions, spinning strings, and cosmic defects |
title_fullStr | Volterra distortions, spinning strings, and cosmic defects |
title_full_unstemmed | Volterra distortions, spinning strings, and cosmic defects |
title_short | Volterra distortions, spinning strings, and cosmic defects |
title_sort | volterra distortions, spinning strings, and cosmic defects |
topic | General Relativity and Cosmology |
url | https://dx.doi.org/10.1088/0264-9381/14/5/017 http://cds.cern.ch/record/302147 |
work_keys_str_mv | AT puntigamrolanda volterradistortionsspinningstringsandcosmicdefects AT solengharaldh volterradistortionsspinningstringsandcosmicdefects |