Dark energy problem from aspects of nonlinear and non-equilibrium physics

非线性和非平衡物理方面的暗能量问题

• 批准号: 21740199
• 负责人: MORITA Masaaki
• 金额: $ 2.75万
• 依托单位: Okinawa National College of Technology (2011)Nagaoka University of Technology (2009-2010)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740199/
• 关键词: 宇宙物理; 理論天文学

From observations of distant type Ia supernovae, the universe is considered to contain an unknown component called 'dark energy', which accelerates cosmic expansion. In order to find out physical substance of dark energy, the evolution of cosmic inhomogeneities is considered from aspects of nonlinear and non-equilibrium physics. Some entropy formulae are proposed, which result from cosmic inhomogeneities, and their properties are studied. In particular, the relation between the temporal increase of the entropy and the accelerated cosmic expansion is clarified.

通过对遥远的Ia型超新星的观测，宇宙被认为含有一种名为“暗能量”的未知成分，它加速了宇宙的膨胀。从非线性和非平衡态物理的角度考虑宇宙非均匀性的演化，以揭示暗能量的物理实质。提出了一些由宇宙不均匀性引起的熵公式，并研究了它们的性质。特别地，阐明了熵随时间的增加与宇宙加速膨胀之间的关系。