Massive gravity: theory and phenomenology
| Project/Area Number |
16K05348
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | Dark Energy / Modified gravity models / Massive gravity / Cosmology / Modified gravity / 宇宙物理 |
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| Outline of Final Research Achievements |
I have achieved several goals in my research during these three years of Kakenhi funding. First of all thanks to Kakenhi, and thanks to the powerful workstation I have build out of it, I was able to understand some important points in my research. 1) Lorentz breaking gravity theories can pass all the known experimental tests in cosmology and the solar system. 2) For the theories I have introduced, I have shown the existence of a non-fine-tuned parameter space in which the theories under study are stable, and do not lead to theoretical inconsistencies, such as ghost degrees of freedom. 3) One of the strongest point for these theories is their phenomenology. In fact, they predict properties which differ from General Relativity and which actually are able to give a better fit to existent cosmological data.
4) In the future, if Kakenhi will still support my research, other exiciting developments may come for these theories also in the light of new experiments.
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| Academic Significance and Societal Importance of the Research Achievements |
With the results of my research, I was able to publish 18 papers. I have accepted one PhD student who has just started working with me.
In terms of social achievements, I have spoken several times with elementary school students about my research in a easy and funny way.
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Report
(4 results)
Research Products
(30 results)
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[Journal Article] Cosmology in generalized Proca theories2016
Author(s)
Antonio De Felice, Lavinia Heisenberg, Ryotaro Kase, Shinji Mukohyama, Shinji Tsujikawa, Ying-li Zhang
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Journal Title
Journal of cosmology and astroparticle physics
Volume: 06
Issue: 06
Pages: 048-048
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Presentation] Cosmological Implications in Massive Gravity2017
Author(s)
Antonio De Felice
Organizer
Invited plenary talk in "Ninth Aegean Summer School. Einstein's theory of gravity and its modifications: from theory to observations" Apollonia, Sifnos, September 18-23, 2017.
Related Report
Int'l Joint Research / Invited
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