A note on positive energy of topologically massive gravity
arXiv:0907.4135 · doi:10.1088/0264-9381/26/19/192001
Abstract
I review how "classical SUGRA" embeddability establishes positive energy E for D=3 topologically massive gravity (TMG), with or without a cosmological term, a procedure familiar from D=4 Einstein gravity (GR). It also provides explicit expressions for E. In contrast to GR, E is not manifestly positive, due to the peculiar two-term nature of TMG.
7 pages