Asymptotic symmetries of colored gravity in three dimensions

  • Euihun JoungEmail author
  • Jaewon Kim
  • Jihun Kim
  • Soo-Jong Rey
Open Access
Regular Article - Theoretical Physics


Three-dimensional colored gravity refers to nonabelian isospin extension of Einstein gravity. We investigate the asymptotic symmetry algebra of the SU(N)-colored gravity in (2+1)-dimensional anti-de Sitter spacetime. Formulated by the Chern-Simons theory with SU(N, N) × SU(N, N) gauge group, the theory contains graviton, SU(N) Chern-Simons gauge fields and massless spin-two multiplets in the SU(N) adjoint representation, thus extending diffeomorphism to colored, nonabelian counterpart. We identify the asymptotic symmetry as Poisson algebra of generators associated with the residual global symmetries of the nonabelian diffeomorphism set by appropriately chosen boundary conditions. The resulting asymptotic symmetry algebra is a nonlinear extension of \( \widehat{\mathfrak{su}(N)} \) Kac-Moody algebra, supplemented by additional generators corresponding to the massless spin-two adjoint matter fields.


Chern-Simons Theories 1/N Expansion 


Open Access

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Copyright information

© The Author(s) 2018

Authors and Affiliations

  1. 1.Department of Physics and Research Institute of Basic ScienceKyung Hee UniversitySeoulKorea
  2. 2.School of Physics & AstronomySeoul National UniversitySeoulKorea
  3. 3.Department of Emerging Materials ScienceDGISTDaeguKorea
  4. 4.Department of Physics and Center for Cosmology & Particle PhysicsNew York UniversityNew YorkU.S.A.

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