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宇宙学的现状－进展、问题和展望
俞允强
(北京大学物理系 北京 100871)
摘 要
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在Friedmann建立膨胀宇宙模型和Hubble发现膨胀迹象后，宇宙均匀性的假设得到证实是最重要的进展。但是此后，由于Hubble常数、宇宙密度和真空能密度未被可靠地确定，宇宙理论尚难以有认真的定量检验。近两年里，这些基本参量的测定有了突破性的进展。它标志着宇宙学理论将在今后一二十年内走向成熟。
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| 关键词 |
宇宙学
－
真空能密度
－
宇宙密度 |
| 分类号 |
P157 |
The Status of Big Bang Cosmology
Yu
Yunqiang
( Department of Physics, Peking University,
Beijing 100871)
Abstract
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The confirmation of the uniformity of Universe is the most fundamental
progress in the cosmology in recent 30 years.
The further crucial task is to fix the input parameters of the
model. Those are the
Hubble constant, cosmic density and cosmological constant.
Before that, the model cannot be convincingly verified.
In recent two years, the measure of
those parameters have had new progress. It indicates that the
cosmology is going to be matured within 10 or 20 years. |
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| Key words |
cosmology
－
cosmic density －
cosmological constant |
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