Conformal gravity and extensions of critical gravity
文献类型：期刊论文
| 作者 | Lu, H ; Pang, Y ; Pope, CN |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2011 |
| 卷号 | 84期号:6页码:64001 |
| 关键词 | DIMENSIONS ANOMALIES ENERGY |
| ISSN号 | 1550-7998 |
| 通讯作者 | Lu, H (reprint author), Cent Univ Finance & Econ, China Econ & Management Acad, Beijing 100081, Peoples R China. |
| 英文摘要 | Higher-order curvature corrections involving the conformally invariant Weyl-squared action have played a role in two recent investigations of four-dimensional gravity: in critical gravity, where they are added to the standard cosmological Einstein-Hilbert action with a coefficient tuned to make the massive ghostlike spin-2 excitations massless, and in a pure Weyl-squared action considered by Maldacena, where the massive spin-2 modes are removed by the imposition of boundary conditions. We exhibit the connections between the two approaches, and we also generalize critical gravity to a wider class of Weyl-squared modifications to cosmological Einstein gravity where one can eliminate the massive ghostlike spin-2 modes by means of boundary conditions. The cosmological constant plays a crucial role in the discussion, since there is then a "window'' of negative mass-squared spin-2 modes around AdS(4) that are not tachyonic. We also construct analogous conformal and nonconformal gravities in six dimensions. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | NSFC [10535060/A050207, 10975172, 10821504]; Ministry of Science and Technology [2007CB815401]; DOE [DE-FG03-95ER40917] |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevD.84.064001 |
| 语种 | 英语 |
| WOS记录号 | WOS:000294405500009 |
| 公开日期 | 2013-05-17 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/14284]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Lu, H,Pang, Y,Pope, CN. Conformal gravity and extensions of critical gravity[J]. PHYSICAL REVIEW D,2011,84(6):64001. |
| APA | Lu, H,Pang, Y,&Pope, CN.(2011).Conformal gravity and extensions of critical gravity.PHYSICAL REVIEW D,84(6),64001. |
| MLA | Lu, H,et al."Conformal gravity and extensions of critical gravity".PHYSICAL REVIEW D 84.6(2011):64001. |
入库方式： OAI收割
来源：理论物理研究所
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