Cascading gravity is ghost free

被引：33
|
作者：
de Rham, Claudia [1 ]
Khoury, Justin [2 ]
Tolley, Andrew J. [3 ]
机构：
[1] Univ Geneva, Dept Phys Theor, CH-1211 Geneva, Switzerland
[2] Univ Penn, Ctr Particle Cosmol, Philadelphia, PA 19104 USA
[3] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada
来源：
PHYSICAL REVIEW D | 2010年 / 81卷 / 12期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1103/PhysRevD.81.124027
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We perform a full perturbative stability analysis of the 6D cascading gravity model in the presence of 3-brane tension. We demonstrate that for sufficiently large tension on the (flat) 3-brane, there are no ghosts at the perturbative level, consistent with results that had previously only been obtained in a specific 5D decoupling limit. These results establish the cascading gravity framework as a consistent infrared modification of gravity.
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页数：11
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