Topologically massive AdS gravity
From MaRDI portal
Publication:901758
DOI10.1016/J.PHYSLETB.2008.07.057zbMATH Open1328.83126arXiv0807.0486OpenAlexW2048758842MaRDI QIDQ901758
Author name not available (Why is that?)
Publication date: 12 January 2016
Published in: (Search for Journal in Brave)
Abstract: We analyze (2+1)-dimensional gravity with a Chern--Simons term and a negative cosmological constant, primarily at the weak field level. The full theory is expressible as the sum of two higher derivative SL(2,R) "vector" Chern-Simons terms, while the physical bulk degrees of freedom correspond to a single massive scalar field, just as for Lambda=0. The interplay of Lambda and the mass parameter mu can be studied, and any physical mass--including the conformal value with null propagation--is accessible by tuning mu. The single bulk mode yields a complete set of normalizable positive energy wave packets, as long as one chooses the usual, "wrong" sign of G necessary to connect smoothly with the known Lambda=0 limit. The chiral Chern--Simons coupling leads to gauge invariant linearized curvatures propagating with chirality-dependent masses. Linearized metric fluctuations have a finite asymptotic Fefferman--Graham expansion about the Poincar'e metric for any mass value greater or equal to a "critical" one, where various amusing effects appear, such as vanishing of one of the two "vector" Chern-Simons terms and an equivalence between tensor and vector excitations. We also find a set of chiral, pp-wave metrics that exactly solve the full nonlinear equations.
Full work available at URL: https://arxiv.org/abs/0807.0486
No records found.
This page was built for publication: Topologically massive AdS gravity
Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q901758)
