Limits of three-dimensional gravity and metric kinematical Lie algebras in any dimension

Abstract We extend a recent classification of three-dimensional spatially isotropic homogeneous spacetimes to Chern-Simons theories as three-dimensional gravity theories on these spacetimes. By this we find gravitational theories for all carrollian, galilean, and aristotelian counterparts of the lor...

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Main Authors: Javier Matulich, Stefan Prohazka, Jakob Salzer
Format: Article
Language:English
Published: SpringerOpen 2019-07-01
Series:Journal of High Energy Physics
Subjects:
Online Access:http://link.springer.com/article/10.1007/JHEP07(2019)118
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author Javier Matulich
Stefan Prohazka
Jakob Salzer
author_facet Javier Matulich
Stefan Prohazka
Jakob Salzer
author_sort Javier Matulich
collection DOAJ
description Abstract We extend a recent classification of three-dimensional spatially isotropic homogeneous spacetimes to Chern-Simons theories as three-dimensional gravity theories on these spacetimes. By this we find gravitational theories for all carrollian, galilean, and aristotelian counterparts of the lorentzian theories. In order to define a nondegenerate bilinear form for each of the theories, we introduce (not necessarily central) extensions of the original kinematical algebras. Using the structure of so-called double extensions, this can be done systematically. For homogeneous spaces that arise as a limit of (anti-)de Sitter spacetime, we show that it is possible to take the limit on the level of the action, after an appropriate extension. We extend our systematic construction of nondegenerate bilinear forms also to all higher-dimensional kinematical algebras.
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spelling doaj.art-8b219482e2924b63ad4fe7dd7f68a0762022-12-22T01:29:48ZengSpringerOpenJournal of High Energy Physics1029-84792019-07-012019715110.1007/JHEP07(2019)118Limits of three-dimensional gravity and metric kinematical Lie algebras in any dimensionJavier Matulich0Stefan Prohazka1Jakob Salzer2Université Libre de Bruxelles and International Solvay Institutes, Physique Mathématique des Interactions FondamentalesUniversité Libre de Bruxelles and International Solvay Institutes, Physique Mathématique des Interactions FondamentalesDepartament de Física Quàntica i Astrofísica, Institut de Ciències del Cosmos, Universitat de BarcelonaAbstract We extend a recent classification of three-dimensional spatially isotropic homogeneous spacetimes to Chern-Simons theories as three-dimensional gravity theories on these spacetimes. By this we find gravitational theories for all carrollian, galilean, and aristotelian counterparts of the lorentzian theories. In order to define a nondegenerate bilinear form for each of the theories, we introduce (not necessarily central) extensions of the original kinematical algebras. Using the structure of so-called double extensions, this can be done systematically. For homogeneous spaces that arise as a limit of (anti-)de Sitter spacetime, we show that it is possible to take the limit on the level of the action, after an appropriate extension. We extend our systematic construction of nondegenerate bilinear forms also to all higher-dimensional kinematical algebras.http://link.springer.com/article/10.1007/JHEP07(2019)118Chern-Simons TheoriesClassical Theories of GravitySpace-Time Symmetries
spellingShingle Javier Matulich
Stefan Prohazka
Jakob Salzer
Limits of three-dimensional gravity and metric kinematical Lie algebras in any dimension
Journal of High Energy Physics
Chern-Simons Theories
Classical Theories of Gravity
Space-Time Symmetries
title Limits of three-dimensional gravity and metric kinematical Lie algebras in any dimension
title_full Limits of three-dimensional gravity and metric kinematical Lie algebras in any dimension
title_fullStr Limits of three-dimensional gravity and metric kinematical Lie algebras in any dimension
title_full_unstemmed Limits of three-dimensional gravity and metric kinematical Lie algebras in any dimension
title_short Limits of three-dimensional gravity and metric kinematical Lie algebras in any dimension
title_sort limits of three dimensional gravity and metric kinematical lie algebras in any dimension
topic Chern-Simons Theories
Classical Theories of Gravity
Space-Time Symmetries
url http://link.springer.com/article/10.1007/JHEP07(2019)118
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AT stefanprohazka limitsofthreedimensionalgravityandmetrickinematicalliealgebrasinanydimension
AT jakobsalzer limitsofthreedimensionalgravityandmetrickinematicalliealgebrasinanydimension