M. Banados, DILATON GRAVITY (WITH A GAUSS-BONNET TERM) DERIVED FROM 5-DIMENSIONALCHERN-SIMONS GRAVITY, Physical review. D. Particles and fields, 55(4), 1997, pp. 2051-2058
We study the problem of boundary terms and boundary conditions for Che
rn-Simons gravity in five dimensions. We show that under reasonable bo
undary conditions one finds an effective field theory at the four-dime
nsional boundary described by dilaton gravity with a Gauss-Bonnet term
. The coupling of matter is also discussed.