Welcome to Shinji Tsujikawa's Home Page
 

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Last updated 9/April/ 2025
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Shinji Tsujikawa
Department of Physics, Waseda University,
3-4-1 Okubo, Shinjuku-ku,
Tokyo, 169-8555, Japan
Phone (Office): +81 3 5286 3014   (ext.) 5620

E-MAIL:
tsujikawa_at_waseda.jp
(please change ''_at_'' to ''@''.)

 

Curriculum Vitae:
I am a professor at Waseda University.
For details, please click here for my CV.

Research interest:

Cosmology is an exciting field in which a host of observational data can test theories. It is of interest to study

My main research interest is to reveal the physical phenomena in the early and late universes by confronting theoretical predictions with observational data.
I would like to construct cosmological models that are most favored from observations.

In particular, I am interested in the following research topis:


My books:

[1]   Dark Energy--Theory and Observations (Cambridge University Press)
       Luca Amendola and Shinji Tsujikawa (published in June 2010)

[2]   Lecture of modern cosmology (Science Press, Japanese)
  　  Shinji Tsujikawa (published in July, 2013)

[3]   General Relativity and the fate of Universe (C & R research, Japanese)
  　  Shinji Tsujikawa (published in February 2015)

[4]   The Encyolopedia of Cosmology, volume 3: Dark Energy
  　  Shinji Tsujikawa (published in May 2018)

[5]   Handbook of Cosmology (Asakura Shoten, Japanese)
        Chapter of Dark Energy, Shinji Tsujikawa (published in February, 2020)

[6]   Dictionary of Relativity and Cosmology (Asakura Shoten, Japanese)
        Chapter of Modified Gravity, Shinji Tsujikawa (published in June, 2020)

[7]   Introduction to Modern Cosmology: from Inflation to Dark Energy (Koudansya, Japanese)
         Shinji Tsujikawa (published in January, 2022)

[8]   Translation of ``The Gravity of Math'' (Subarusha, Japanese)
         Steve Nadis and Shing-Tung Yau, translated by Shinji Tsujikawa (published in August, 2024)

My review articles:

[1]  Inflation dynamics and reheating
       Reviews of Modern Physics 78, 537-589 (2006),
       astro-ph/ 0507632

      With Bruce A. Bassett (Capetown, South Africa) and David Wands (Portsmouth, UK)
      Review article on cosmic inflation. 

[2]  Dynamics of dark energy
       International Journal of Modern Physics D15, 1753-1936 (2006),
       hep-th/0603057

      With Edmund J. Copeland (Nottingham, UK) and M. Sami (Jamia Millia Islamia, India)
      Review article on dark energy.

　　　This paper was introduced as a ''Fast Breaking Paper'' in the Thomson webpage.

[3]  f(R) theories
       Living Reviews in Relativity, 13: 3, 2010
       arXiv: 1002.4928 [gr-qc]

      With Antonio De Felice (Tokyo University of Science, Japan)
      Review article on f(R) theories.

[4]   Modified gravity models of dark energy
        Lect. Notes Phys. 800, 99 (2010)
       arXiv: 1101.0191 [gr-qc]

        Lecture note on modified gravity and dark energy

[5]   Quintessence: a review
       Classical and Quantum Gravity, 30, 214003 (2013)
       arXiv: 1304.1961 [gr-qc]

       Review article on quintessence

[6]   The effective field theory of inflation/dark energy and the Horndeski theory

       Lect. Notes Phys. 892, 97 (2015)
       arXiv: 1404.2684 [gr-qc]

       Lecture note on the effective field theory of modified gravity

[7]   Dark energy in Horndeski theories after GW170817: a review
       With Ryotaro Kase (Tokyo University of Science, Japan)

       International Journal of Modern Physics D28, 05, 1942005 (2019),
       arXiv: 1809.08735 [gr-qc]

 

My interpretive articles:

[1]   Suurikagaku(April, 2005)：Recent progress of quantum gravity（Hideo Kodama and other authurs)
　　　''Loop quantum gravity'' (p52-p57)

[2]   Tenmon Geppou (SKYLIGHT, September, 2007)：
　　　''What is the origin of dark energy?'' (p462-472)

[3]   Suurikagaku (June, 2009)：Physics and field equations（Miki Wadati and other authors)
　　　''Einstein equations'' (p42-p46)

[4]   Suurikagaku (July, 2011)：Hidden law of physics（Tetsuya Shiromizu and other authurs)
　　　''Hidden constant: Dark energy'' (p42-p46)

[5]   Physical society monthly magazine (July, 2014)
　　　''Dark energy and modified gravity'' (p444-p452)

[6]   Suurikagaku (December, 2015)：Mystery of curved spacetime（Kei-ichi Maeda and others)
　　　''Dark energy and modifications of gravity'' (p27-p33)

[7]   Suurikagaku (December, 2022)：Mystery of Universe（Takahiko Matsubara and others)
　　　''What is the origin of dark energy?'' (p43-p50)


Publications : Please click here.


Citation summary (INSPIRE) : Please click here.
                                                     Google Scholar is here.


Highly cited researcher:  Chosen as a  highly cited researcher in 2014.　
　　　　　　　　　　   


Awards:  Please click here.

　　　　　　　　　　   
Papers for public:

[1] Science Watch (Thomson Company) : The following paper was introduced as ''NEW HOT PAPERS'' in July, 2008.
       ''Conditions for the cosmological viablity of f(R) dark energy models''
        L. Amendola, R. Gannouji, D. Polarski and S. Tsujikawa
        Physical Review D75, 083504 (2007)

[2] The Telegraph India : The following paper was introduced in March, 2005.
       ''What is needed of a tachyon if it is to be the dark energy?''
        E. Copeland, M. Garousi, M. Sami and S. Tsujikawa
        Physical Review D71, 043003 (2005)

Collaborators : Please click here.

Projects : 

[1] Member of FastSound

[2] Member of DECIGO

[3] Member of J-PAS

 

Editor of journals: Please click here.

Professional service: Please click here.
                            

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