تقرير
Topologically Massive AdS Gravity
| العنوان: | Topologically Massive AdS Gravity |
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| المؤلفون: | Carlip, S., Deser, S., Waldron, A., Wise, D. K. |
| المصدر: | Phys.Lett.B666:272-276,2008 |
| سنة النشر: | 2008 |
| المجموعة: | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| مصطلحات موضوعية: | High Energy Physics - Theory, General Relativity and Quantum Cosmology |
| الوصف: | 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. Comment: Version to appear in Physics Letters B |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.physletb.2008.07.057 |
| URL الوصول: | http://arxiv.org/abs/0807.0486 |
| رقم الأكسشن: | edsarx.0807.0486 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.physletb.2008.07.057 |
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