Conformal symmetry and the cosmological constant problem

被引：11
|
作者：
Lucat, Stefano [1 ]
Prokopec, Tomislav
Swiezewska, Bogumila
机构：
[1] Univ Utrecht, Fac Sci, Spinoza Inst, Inst Theoret Phys, Postbus 80-195, NL-3508 TD Utrecht, Netherlands
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2018年 / 27卷 / 14期
关键词：
Cosmological constant; conformal symmetry; naturalness;
D O I：
10.1142/S0218271818470144
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We argue that when a theory of gravity and matter is endowed with (classical) conformal symmetry, the fine tuning required to obtain the cosmological constant at its observed value can be significantly reduced. Once tuned, the cosmological constant is stable under a change of the scale at which it is measured.
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页数：6
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