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Autor(es)
Parekh, Pulastya; Tempo, David; Troncoso, Ricardo |
ISSN:
1029-8479 |
Idioma:
eng |
Fecha:
2023-09 |
Tipo:
Artículo |
Revista:
Journal of High Energy Physics |
Datos de la publicación:
vol. 2023 Issue: no. 9 Pages: |
DOI:
10.1007/JHEP09(2023)083 |
Descripción:
Funding Information: We thank Arjun Bagchi, Aritra Banerjee, Glenn Barnich, Geoffrey Compère, Stéphane Detournay, José Edelstein, Oscar Fuentealba, Gaston Giribet, Andrés Gomberoff, Hernán González, Marc Henneaux, Diego Hidalgo, Javier Matulich, Alfredo Pérez, Miguel Pino, Pablo Rodríguez and Patricio Salgado-Rebolledo for useful comments and discussions. RT thanks the organizers of the Solvay Workshop on “Progress on gravitational physics: 45 years of Belgian-Chilean collaboration”, during April 2023 in Brussels, for the opportunity of presenting this work in a wonderful atmosphere. DT and RT also thank the Physique Théorique et Mathématique group of the Université Libre de Bruxelles and the International Solvay Institutes for the kind hospitality. RT thanks the support of Vicerrectoría de Investigación y Doctorados de la Universidad San Sebastián, Chile — fund ‘USS-FIN-23-PASI-10’. This research has been partially supported by ANID FONDECYT grants N° 1211226, 1220910, 1221624 and 3210558. Funding Information: We thank Arjun Bagchi, Aritra Banerjee, Glenn Barnich, Geoffrey Compère, Stéphane Detournay, José Edelstein, Oscar Fuentealba, Gaston Giribet, Andrés Gomberoff, Hernán González, Marc Henneaux, Diego Hidalgo, Javier Matulich, Alfredo Pérez, Miguel Pino, Pablo Rodríguez and Patricio Salgado-Rebolledo for useful comments and discussions. RT thanks the organizers of the Solvay Workshop on “Progress on gravitational physics: 45 years of Belgian-Chilean collaboration”, during April 2023 in Brussels, for the opportunity of presenting this work in a wonderful atmosphere. DT and RT also thank the Physique Théorique et Mathématique group of the Université Libre de Bruxelles and the International Solvay Institutes for the kind hospitality. RT thanks the support of Vicerrectoría de Investigación y Doctorados de la Universidad San Sebastián, Chile — fund ‘USS-FIN-23-PASI-10’. This research has been partially supported by ANID FONDECYT grants N° 1211226, 1220910, 1221624 and 3210558. Publisher Copyright: © 2023, The Author(s). |
Resumen:
Two types of Carrollian field theories are shown to emerge from finite current-current deformations of toroidal CFT2’s when the deformation coupling is precisely fixed, up to a sign. In both cases the energy and momentum densities fulfill the BMS3 algebra. Applying these results to the bosonic string, one finds that the electric-like deformation (positive coupling) reduces to the standard tensionless string. The magnetic-like deformation (negative coupling) yields to a new theory, still being relativistic, devoid of tension and endowed with an “inner Carrollian structure”. Classical solutions describe a sort of “self-interacting null particle” moving along generic null curves of the original background metric, not necessarily geodesics. This magnetic-like theory is also shown to be recovered from inequivalent limits in the tension of the bosonic string. Electric- and magnetic-like deformations of toroidal CFT2’s can be seen to correspond to limiting cases of continuous exactly marginal (trivial) deformations spanned by an SO(1,1) automorphism of the current algebra. Thus, the absolute value of the current-current deformation coupling is shown to be bounded. When the bound saturates, the deformation ceases to be exactly marginal, but still retains the full conformal symmetry in two alternative ultrarelativistic regimes. |
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