Godel type metrics in randall sundrum model

被引:3
|
作者
Modgil, Moninder Singh [1 ]
Panda, Sukanta [2 ]
机构
[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India
[2] Harish Chandra Res Inst, Allahabad, Uttar Pradesh, India
关键词
cosmology; exact solutions; gravity in more than four dimensions;
D O I
10.1142/S021773230702172X
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Anisotropic cosmological models such as the Godel universe and its extensions - Godel type solutions, are embedded on a visible brane in the model 1 of Randall Sundrum. The size of the extra dimension is stabilized by tuning the rotation parameter to a very small value so that hierarchy problem can be solved. A limiting case also yields the Randall Sundrum 2 model. The angular velocity omega similar to 1/a would be of O(e(k vertical bar y vertical bar)) which would be unacceptably large if e(k vertical bar y vertical bar) were adjusted to solve the hierarchy problem as normally formulated. Should one choose to reverse the choice of the fundamental and generated scales, e(k vertical bar y vertical bar) could turn out to be O(10(-16)) which would fall in the right range.
引用
收藏
页码:979 / 987
页数:9
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