| Project/Area Number |
19740149
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Daido Institute of Technology |
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Principal Investigator |
SAIDA Hiromi Daido Institute of Technology, 教養部, 准教授 (80367648)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥1,900,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥600,000 (Direct Cost: ¥600,000)
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| Keywords | ブラックホール熱力学 / エントロピー=面積則 / 量子重力 / 熱力学 / 量子統計力学 / 非平衡蒸発過程 / 相対論的散逸流体 / 統計力学 / 分配関数 / ブラックホール蒸発 / ブラックホールのエントロピー |
|---|
| Research Abstract |
Black Hole (BH) is the spacetime region affected by extremely strong gravity, and nothing can escape from BH. In order to understand deeper the micro-scale properties of gravity via researching BH, we consider two problems : (1) What does happen at the end of BH evaporation? (2) It is already known that, when a single BH exists, its entropy is given by the area of BH (Entropy-Area law). It has been conjectured without proof that the entropy-area law holds for systems including some BHs. Is this conjecture correct? Then, the results of research are as follows. Result on (1) : BH can not evaporate completely due to the law of entropy increase, and a remnant of Planck scale should remain. Result on (2) : The conjecture is wrong, and the entropy-area law does not hold in the system including some BHs. Furthermore, it is also found that the potential of gravity has finite value within a short length scale such as Planck length (contrary to the past expectation which expects that the gravitational potential is negative infinity at short length scale).
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