Gravity coupled to a scalar field from a Chern-Simons action: describing rotating hairy black holes and solitons with gauge fields

Abstract Einstein gravity minimally coupled to a scalar field with a two-parameter Higgs-like self-interaction in three spacetime dimensions is recast in terms of a Chern-Simons form for the algebra g + ⊕ g − where, depending on the sign of the self-interaction couplings, g ± can be so(2, 2), so(3,...

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Main Authors: Marcela Cárdenas, Oscar Fuentealba, Cristián Martínez, Ricardo Troncoso
Format: Article
Language:English
Published: SpringerOpen 2023-02-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP02(2023)058
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author Marcela Cárdenas
Oscar Fuentealba
Cristián Martínez
Ricardo Troncoso
author_facet Marcela Cárdenas
Oscar Fuentealba
Cristián Martínez
Ricardo Troncoso
author_sort Marcela Cárdenas
collection DOAJ
description Abstract Einstein gravity minimally coupled to a scalar field with a two-parameter Higgs-like self-interaction in three spacetime dimensions is recast in terms of a Chern-Simons form for the algebra g + ⊕ g − where, depending on the sign of the self-interaction couplings, g ± can be so(2, 2), so(3, 1) or iso(2, 1). The field equations can then be expressed through the field strength of non-flat composite gauge fields, and conserved charges are readily obtained from boundary terms in the action that agree with those of standard Chern-Simons theory for pure gravity, but with non-flat connections. Regularity of the fields then amounts to requiring the holonomy of the connections along contractible cycles to be trivial. These conditions are automatically fulfilled for the scalar soliton and allow to recover the Hawking temperature and chemical potential in the case of the rotating hairy black holes presented here, whose entropy can also be obtained by the same formula that holds in the case of a pure Chern-Simons theory. In the conformal (Jordan) frame the theory is described by General Relativity with cosmological constant conformally coupled to a self-interacting scalar field, and its formulation in terms of a Chern-Simons form for suitably composite gauge fields is also briefly addressed.
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spelling doaj.art-b528d8e2e4a54844bd805ef9004455b32023-07-16T11:07:46ZengSpringerOpenJournal of High Energy Physics1029-84792023-02-012023212010.1007/JHEP02(2023)058Gravity coupled to a scalar field from a Chern-Simons action: describing rotating hairy black holes and solitons with gauge fieldsMarcela Cárdenas0Oscar Fuentealba1Cristián Martínez2Ricardo Troncoso3Departamento de Física, Universidad de Santiago de ChileUniversité Libre de Bruxelles and International Solvay InstitutesCentro de Estudios Científicos (CECs)Centro de Estudios Científicos (CECs)Abstract Einstein gravity minimally coupled to a scalar field with a two-parameter Higgs-like self-interaction in three spacetime dimensions is recast in terms of a Chern-Simons form for the algebra g + ⊕ g − where, depending on the sign of the self-interaction couplings, g ± can be so(2, 2), so(3, 1) or iso(2, 1). The field equations can then be expressed through the field strength of non-flat composite gauge fields, and conserved charges are readily obtained from boundary terms in the action that agree with those of standard Chern-Simons theory for pure gravity, but with non-flat connections. Regularity of the fields then amounts to requiring the holonomy of the connections along contractible cycles to be trivial. These conditions are automatically fulfilled for the scalar soliton and allow to recover the Hawking temperature and chemical potential in the case of the rotating hairy black holes presented here, whose entropy can also be obtained by the same formula that holds in the case of a pure Chern-Simons theory. In the conformal (Jordan) frame the theory is described by General Relativity with cosmological constant conformally coupled to a self-interacting scalar field, and its formulation in terms of a Chern-Simons form for suitably composite gauge fields is also briefly addressed.https://doi.org/10.1007/JHEP02(2023)058Black HolesClassical Theories of GravityAdS-CFT Correspondence
spellingShingle Marcela Cárdenas
Oscar Fuentealba
Cristián Martínez
Ricardo Troncoso
Gravity coupled to a scalar field from a Chern-Simons action: describing rotating hairy black holes and solitons with gauge fields
Journal of High Energy Physics
Black Holes
Classical Theories of Gravity
AdS-CFT Correspondence
title Gravity coupled to a scalar field from a Chern-Simons action: describing rotating hairy black holes and solitons with gauge fields
title_full Gravity coupled to a scalar field from a Chern-Simons action: describing rotating hairy black holes and solitons with gauge fields
title_fullStr Gravity coupled to a scalar field from a Chern-Simons action: describing rotating hairy black holes and solitons with gauge fields
title_full_unstemmed Gravity coupled to a scalar field from a Chern-Simons action: describing rotating hairy black holes and solitons with gauge fields
title_short Gravity coupled to a scalar field from a Chern-Simons action: describing rotating hairy black holes and solitons with gauge fields
title_sort gravity coupled to a scalar field from a chern simons action describing rotating hairy black holes and solitons with gauge fields
topic Black Holes
Classical Theories of Gravity
AdS-CFT Correspondence
url https://doi.org/10.1007/JHEP02(2023)058
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AT cristianmartinez gravitycoupledtoascalarfieldfromachernsimonsactiondescribingrotatinghairyblackholesandsolitonswithgaugefields
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