(2 + 1)-dimensional interacting model of two massless spin-2 fields as a bi-gravity model
| Autor: | S. Hoseinzadeh, A. Rezaei-Aghdam |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
High Energy Physics - Theory
Physics Nuclear and High Energy Physics Spacetime 010308 nuclear & particles physics Conformal field theory Graviton FOS: Physical sciences Computer Science::Digital Libraries 01 natural sciences lcsh:QC1-999 Massless particle Gravitation General Relativity and Quantum Cosmology High Energy Physics::Theory High Energy Physics - Theory (hep-th) 0103 physical sciences Lie algebra Anti-de Sitter space 010306 general physics Central charge lcsh:Physics Mathematical physics |
| Zdroj: | Physics Letters B, Vol 781, Iss, Pp 383-389 (2018) Physics Letters |
| ISSN: | 0370-2693 |
| Popis: | We propose a new group-theoretical (Chern-Simons) formulation for the bi-metric theory of gravity in (2+1)-dimensional spacetime which describe two interacting massless spin-2 fields. Our model has been formulated in terms of two dreibeins rather than two metrics. We obtain our Chern-Simons gravity model by gauging {\it mixed AdS-AdS Lie algebra} and show that it has a two dimensional conformal field theory (CFT) at the boundary of the anti de Sitter (AdS) solution. We show that the central charge of the dual CFT is proportional to the mass of the AdS solution. We also study cosmological implications of our massless bi-gravity model. Comment: 8 pages |
| Databáze: | OpenAIRE |
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