New Solution of the Cosmological Constant Problems

被引：50

作者：

Barrow, John D. ^{[1
]}

Shaw, Douglas J. ^{[1
]}

机构：

[1] Ctr Math Sci, DAMTP, Cambridge CB3 0WA, England

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.106.101302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We extend the usual gravitational action principle by promoting the bare cosmological constant (CC) to a field which can take many possible values. Variation gives a new integral constraint equation for the classical value of the effective CC that dominates the wave function of the Universe. The expected value of the effective CC, is calculated from measurable quantities to be O(t(U)(-2)) as observed, where t(U) is the present age of the Universe in Planck units. This also leads to a falsifiable prediction for the observed spatial curvature parameter of Omega(k0) = -0.0055. Our proposal requires no fine-tunings or extra dark-energy fields but suggests a new view of time evolution.

引用

页数：4

共 10 条

[1]

[Anonymous], 1986, The anthropic cosmological principle

[2] Strong constraint on ever-present Λ [J].