The cosmological constant puzzle

被引：22
作者：
Bass, Steven D. [1 ]
机构：
[1] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria
来源：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2011年 / 38卷 / 04期
基金：
奥地利科学基金会;
关键词：
GENERAL-RELATIVITY;
D O I：
10.1088/0954-3899/38/4/043201
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The accelerating expansion of the Universe points to a small positive vacuum energy density and negative vacuum pressure. A strong candidate is the cosmological constant in Einstein's equations of general relativity. Possible contributions are zero-point energies and the condensates associated with spontaneous symmetry breaking. The vacuum energy density extracted from astrophysics is 10(56) times smaller than the value expected from quantum fields and standard model particle physics. Is the vacuum energy density time dependent? We give an introduction to the cosmological constant puzzle and ideas how to solve it.
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页数：18
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