On dynamical adjustment mechanisms for the cosmological constant

被引：0
|
作者：
Hebecker, A [1 ]
机构：
[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland
来源：
PARTICLES, STRINGS AND COSMOLOGY, PROCEEDINGS | 2001年
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D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
After recalling why dynamical adjustment mechanisms represent a particularly attractive possibility for solving the cosmological constant problem, we briefly discuss their intrinsic difficulties as summarized in Weinberg's no-go theorem. We then comment on some problems of the recently proposed 'self-tuning' mechanism in 4+1 dimensions. Finally, we describe an alternative approach which uses the time-evolution of the universe to achieve a dynamical relaxation of the cosmological constant to zero.
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页码：361 / 364
页数：4
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