| 研究課題/領域番号 |
16K05348
|
|---|
| 研究機関 | 京都大学 |
|---|
研究代表者 |
|
|---|
| 研究期間 (年度) |
2016-04-01 – 2019-03-31
|
| キーワード | Massive gravity / Modified gravity / Dark Energy / Cosmology |
|---|
| 研究実績の概要 |
During the last year I have worked on several aspects of the minimal theory of massive gravity (MTMG) and bigravity, two of the models that I have recently introduced together with my collaborators.
In the context of MTMG, I have attempted to search for a modification of gravity which could get a better fit to the data, and at the same time, to give some insight of how a viable theory of massive gravity might look like. Since last April, I have written papers published in high‐impact‐factor peer‐reviewed journals. In particular, I have understood how MTMG can influence some Dark Energy data and proved that it can do a better fit with respect to the standard model of cosmology. Although other more precise data are necessary to further confirm MTMG these results are very promising.
|
| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
I believe the project has progressed in a good way. I have smoothly finished the papers related to project I had intended to study.
In particular, at the moment, I am learning how to make a Boltzmann code in order to further constrain theories.
Also I have written down a computer numerical code which calculates the observable for the ISW-galaxy cross-correlation data, which is not using any large-k approximation. This fact, makes the predictions robust.
|
| 今後の研究の推進方策 |
In the future, I plan to extend both the theoretical analysis and experimental constraints on the models I have been working on.
In particular I want explore the possibility of extending the minimal theory to other matter content in order to expand the possibilities for dark energy.
After this, I would also like to extend already written numerical code, for example by modifying the CLASS code, in order to cover more experimental data, which might be sensitive to dark energy models and the late‐time dynamics of the universe.
|
