Comment on "Cosmological Topological Massive Gravitons and Photons"

Abstract

In a recent paper (arXiv: 0801.4566) it was shown that all global energy eigenstates of asymptotically $Ad{S}_3$ chiral gravity have non-negative energy at the linearized level. This result was questioned (arXiv: 0803.3998) by Carlip, Deser, Waldron and Wise (CDWW), who work on the Poincare patch. They exhibit a linearized solution of chiral gravity and claim that it has negative energy and is smooth at the boundary. We show that the solution of CDWW is smooth only on that part of the boundary of $Ad{S}_3$ included in the Poincare patch. Extended to global $Ad{S}_3$, it is divergent at the boundary point not included in the Poincare patch. Hence it is consistent with the results of (arXiv: 0801.4566).

4 pages, comment on arXiv 0803.3998 [hep-th]

References in corpus (7)

• Chiral Gravity in Three Dimensions
• Cosmological Topologically Massive Gravitons and Photons
• Energy in Topologically Massive Gravity
• Brown-Henneaux's Canonical Approach to Topologically Massive Gravity
• Mass and angular momentum of asymptotically AdS or flat solutions in the topologically massive gravity
• Massive, Topologically Massive, Models
• Lectures on black holes and the AdS_3 / CFT_2 correspondence

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