研究生: |
林婉姝 Lin, Wan-Shu |
---|---|
論文名稱: |
探究熵力宇宙學的基本性質 Exploring the essential property of entropic cosmology |
指導教授: |
李沃龍
Lee, Wolung |
口試委員: |
李沃龍
Lee, Wolung 吳建宏 Ng, Kin-Wang 齊祖康 Chyi, Tzuu-Kang |
口試日期: | 2024/03/27 |
學位類別: |
碩士 Master |
系所名稱: |
物理學系 Department of Physics |
論文出版年: | 2024 |
畢業學年度: | 112 |
語文別: | 英文 |
論文頁數: | 28 |
英文關鍵詞: | Accelerating expansion, entropic force model, constant parameter equation of state, phantom, Hubble constant problem |
DOI URL: | http://doi.org/10.6345/NTNU202400482 |
論文種類: | 學術論文 |
相關次數: | 點閱:125 下載:0 |
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To explain the accelerating expansion of the universe, the entropic force, assumingly arises from the surface term in the Einstein-Hilbert’s action, has become another interpretation of driving force for the acceleration.
Among many different approaches, we propose to adopt the entropic force model(EFM) with a constant parameter equation of state wx which equals to-1+2γ/3, where γ is related to the coefficients of the new terms in the modified Friedmann equations.
The model was evaluated by constraining with the observational data. We discovered the parameter exhibits remarkable fit with the data which leans toward the phantom nature i.e. wx < −1. At the same time, for Hubble constant problem (Hubble tension), it appears to support the local distance measurement rather than the cosmic microwave background(CMB) data.
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