摘要
While the pressureless dust assumption has been widely adopted in the standard model of cosmology, a quantitative estimate of the actual contributions of the baryonic matter and the hot/cold dark matter to the age of the Universe has not yet been made in literature. They provide a simple scenario of how the solution, e.g. the age of the Universe, is affected by the inclusion of the thermal pressure of the baryon and dark matter particles.
While the pressureless dust assumption has been widely adopted in the standard model of cosmology, a quantitative estimate of the actual contributions of the baryonic matter and the hot/cold dark matter to the age of the Universe has not yet been made in literature. They provide a simple scenario of how the solution, e.g. the age of the Universe, is affected by the inclusion of the thermal pressure of the baryon and dark matter particles.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2000年第5期657-658,共2页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金资助项目!(198730 13)
北京师范大学青年基金资助项目!(2 72 0 0 3)
关键词
暗物质
热压力
宇宙年龄
宇宙学
thermal pressure of dark matter
age of the Universe
cosmology
