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Author |
Caroca, R.; Concha, P.; Rodriguez, E.; Salgado-Rebolledo, P. |
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Title |
Generalizing the bms(3) and 2D-conformal algebras by expanding the Virasoro algebra |
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Year |
2018 |
Publication  |
European Physical Journal C |
Abbreviated Journal |
Eur. Phys. J. C |
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Volume |
78 |
Issue |
3 |
Pages |
15 pp |
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Abstract |
By means of the Lie algebra expansion method, the centrally extended conformal algebra in two dimensions and the bms3 algebra are obtained from the Virasoro algebra. We extend this result to construct new families of expanded Virasoro algebras that turn out to be infinite-dimensional lifts of the so-called Bk, Ck and Dk algebras recently introduced in the literature in the context of (super) gravity. We also show how some of these new infinite-dimensional symmetries can be obtained from expanded Kac-Moody algebras using modified Sugawara constructions. Applications in the context of three-dimensional gravity are briefly discussed. |
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Address |
[Caroca, Ricardo] Univ Catolica Santisima Concepcion, Dept Matemat & Fis Aplicadas, Alonso de Rivera 2850, Concepcion, Chile, Email: rcaroca@ucsc.cl; |
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Publisher |
Springer |
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English |
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Edition |
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ISSN |
1434-6044 |
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Notes |
WOS:000428848200001 |
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Call Number |
UAI @ eduardo.moreno @ |
Serial |
843 |
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Author |
Caroca, R.; Concha, P.; Fierro, O.; Rodriguez, E.; Salgado-Rebolledo, P. |
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Title |
Generalized Chern-Simons higher-spin gravity theories in three dimensions |
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Year |
2018 |
Publication |
Nuclear Physics B |
Abbreviated Journal |
Nucl. Phys. B |
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Volume |
934 |
Issue |
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Pages |
240-264 |
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Keywords |
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Abstract |
The coupling of spin-3 gauge fields to three-dimensional Maxwell and AdS-Lorentz gravity theories is presented. After showing how the usual spin-3 extensions of the Ad S and the Poincare algebras in three dimensions can be obtained as expansions of sl (3, R) algebra, the procedure is generalized so as to define new higher-spin symmetries. Remarkably, the spin-3 extension of the Maxwell symmetry allows one to introduce a novel gravity model coupled to higher-spin topological matter with vanishing cosmological constant, which in turn corresponds to a flat limit of the AdS-Lorentz case. We extend our results to define two different families of higher-spin extensions of three-dimensional Einstein gravity. (C) 2018 The Authors. Published by Elsevier B.V. |
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Address |
[Caroca, Ricardo; Fierro, Octavio] Univ Catolica Santisima Concepcion, Dept Matemat & Fis Aplicadas, Alonso de Ribera 2850, Concepcion, Chile, Email: rcaroca@ucsc.cl; |
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Publisher |
Elsevier Science Bv |
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Language |
English |
Summary Language |
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Original Title |
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Abbreviated Series Title |
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Series Volume |
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Edition |
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ISSN |
0550-3213 |
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Notes |
WOS:000445497400009 |
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Call Number |
UAI @ eduardo.moreno @ |
Serial |
917 |
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