The Cosmological Evolution of Baryonic Matter’S Density Perturbations Under Influence of the Quintessence

• 作者: Chechin Leonid Mikhajlovich
• 来源期刊: 现代物理(英文)
• 学科: 地球科学
• 关键词: Baryonic Matter’S Density PERTURBATIONS QUINTESSENCE Field NONSTATIONARY EQUATION Of State Of The UNIVERSE
• 年，卷（期）: xdwlyw_2011,（8）
• 页码范围: 834-840
• 页数: 7页
• 分类号: P1

摘要

For deeper understanding the process of baryonic matter evolution in the expanding Universe it is necessary to know the physical property of concrete field that represents the background of substrate type of dark energy. Beside, it is necessary to explore in details the influence of such field on the continuous medium of baryonic matter. These statements were realized for the quintessence field that describes by two gravitating scalar fields. They give own contributions at the total pressure and at the total mass density of baryonic matter. It allowed show that evolution of baryonic matter’s density perturbations obeys the equation of forced oscillations and admits the resonance case, when amplitude of baryonic matter’s density perturbations gets the strong short-time splash. This splash interprets as a new macroscopic mechanism of the initial matter density perturbations appearance.