Erratum to `Instability in cosmological topologically massive gravity at the chiral point', arXiv:0805.2610

Understand

We correct a sign in the first variation of the on-shell action of cosmological topologically massive gravity at the chiral point and present the three equations affected by that sign.

• While this does not change any of the main conclusions of arXiv:0805.2610, it modifies the finite part of the Brown-York stress tensor.
• Our corrected Brown-York stress tensor is still finite, conserved and traceless, but no longer coincides with that of global AdS_3.
• It agrees with results found in recent literature.