Unimodular quantum gravity and the cosmological constant

被引：0
|
作者：
R. Percacci
机构：
[1] SISSA,
[2] INFN,undefined
[3] Sezione di Trieste,undefined
来源：
Foundations of Physics | 2018年 / 48卷
关键词：
Cosmological constant; Quantum gravity; Unimodular;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
It is shown that the one-loop effective action of unimodular gravity is the same as that of ordinary gravity, restricted to unimodular metrics. The only difference is in the treatment of the global scale degree of freedom and of the cosmological term. A constant vacuum energy does not gravitate, addressing one aspect of the cosmological constant problem.
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页码：1364 / 1379
页数：15
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