Dark energy problem from aspects of nonlinear and non-equilibrium physics
Project/Area Number |
21740199
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Single-year Grants |
Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
|
Research Institution | Okinawa National College of Technology (2011) Nagaoka University of Technology (2009-2010) |
Principal Investigator |
MORITA Masaaki 沖縄工業高等専門学校, 総合科学科, 准教授 (50390563)
|
Project Period (FY) |
2009 – 2011
|
Project Status |
Completed (Fiscal Year 2011)
|
Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
|
Keywords | 宇宙物理 / 理論天文学 |
Research Abstract |
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.
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Report
(4 results)
Research Products
(19 results)