Boundary dynamics of asymptotically flat 3D gravity coupled to higher spin fields
We construct a two-dimensional action principle invariant under a spin-three extension of BMS3 group. Such a theory is obtained through a reduction of Chern-Simons action with a boundary. This procedure is carried out by imposing a set of boundary conditions obtained from asymptotically flat spacetimes in three dimensions. When implementing part of this set, we obtain an analog of chiral WZW model based on a contraction of sl(3, a"e) x sl(3, a"e). The remaining part of the boundary conditions imposes constraints on the conserved currents of the model, which allows to further reduce the action principle. It is shown that a sector of this latter theory is related to a flat limit of Toda theory.
|Título según WOS:
|Boundary dynamics of asymptotically flat 3D gravity coupled to higher spin fields
|Título de la Revista:
|JOURNAL OF HIGH ENERGY PHYSICS
|Fecha de publicación: