Curriculum vitae —– Hayato Motohashi 1 Hayato Motohashi (October 23, 2018) Yukawa Institute for Theoretical Physics, [email protected] Kyoto University, +81-75-753-7076 Kitashirakawa Oiwakecho, Sakyo Ward, http://www2.yukawa.kyoto-u.ac.jp/~hayato.motohashi/ Kyoto 606-8317, Japan ORCID: 0000-0002-4330-7024

Academic Positions Since 2017 Nov. Research Assistant Professor, Yukawa Institute for Theoretical Physics (YITP), Kyoto University. 2016 Nov. – 2017 Oct. Severo Ochoa Postdoctoral Researcher, Instituto de F´ısica Corpuscular (IFIC), Universidad de Valencia-CSIC. 2015 Sep. – 2016 Oct. Associate Fellow, Kavli Institute for Cosmological Physics (KICP), University of Chicago. 2013 Sep. – 2015 Sep. Japan Society for the Promotion of Science (JSPS) Postdoctoral Fellow, KICP, University of Chicago. 2013 Apr. – Sep. Postdoctoral Researcher, YITP, Kyoto University. 2010 Apr. – 2013 Mar. JSPS Research Fellow (DC1), Research Center for the Early Universe (RESCEU), University of Tokyo. 2008 Sep. - 2010 Mar. Teaching Assistant, University of Tokyo.

Education 2010 Apr. – 2013 Mar. Ph.D., Physics, University of Tokyo. Dissertation: Cosmological consequences of modified gravity for the primordial and late-time cosmic acceleration Advisor: Jun’ichi Yokoyama 2008 Apr. – 2010 Mar. M.S., Physics, University of Tokyo. 2004 Apr. – 2008 Mar. B.S., Physics, University of Tokyo.

Awards and Honors December 1, 2017 JGRG27 Outstanding Presentation Award. March 25, 2013 Graduate School of Science Research Award, University of Tokyo.

Fellowships and Grants 2018 May – June Balzan Centre for Cosmological Studies program, e3,000. 2018 April – 2022 March JSPS KAKENHI Grant-in-Aid for Early-Career Scientists JP18K13565, Y4,290,000. 2016 Nov. – 2018 Oct. Severo Ochoa Postdoctoral Fellowship, e46,300. 2013 Sep. – 2015 Sep. JSPS Postdoctoral Fellowships for Research Abroad, Y5,256,000. 2012 Jun. – July JSPS Institutional Program for Young Researcher Overseas Visits, Y300,000. 2010 Apr. – 2013 Mar. JSPS KAKENHI Grant No. JP10J03295, Y2,100,000. 2010 Apr. – 2013 Mar. JSPS Research Fellowships for Young Scientists, DC1, Y7,200,000. 2009 Jun. – July JSPS Institutional Program for Young Researcher Overseas Visits, Y300,000.

University Services 2015 Apr. – 2016 Mar. Cosmology Seminar Committee, KICP, University of Chicago. 2011 Sep. – 2012 Aug. Early Universe Seminar Chair, RESCEU, University of Tokyo. Curriculum vitae —– Hayato Motohashi 2

Workshops organized 3. Winter 2016 Postdocs Symposium, University of Chicago, February 19, 2016. http://kicp.uchicago.edu/events/kicp postdocs.html#id 647 2. Fall 2015 Postdocs Symposium, University of Chicago, October 30, 2015. http://kicp.uchicago.edu/events/kicp postdocs.html#id 593 1. KICP workshop “Exploring Theories of Modified Gravity”, University of Chicago, October 12-14, 2015. http://kicp-workshops.uchicago.edu/2015-mg/

Academic Experience Since 2017 Reviewer for International Journal of Modern Physics D, World Scientific. Since 2013 Reviewer for European Physical Journal C, Edition´ Diffusion Presse (EDP) Sci- ences, Springer Science+Business Media, Societa` Italiana di Fisica. Since 2011 Reviewer for Physical Review D, American Physical Society (United States). Since 2011 Reviewer for Physics Letters B, Elsevier (Netherlands). Since 2010 Reviewer for Journal of Cosmology and Astroparticle Physics, IOP Publish- ing/SISSA (United Kingdom/Italy). Since 2009 Member of Physical Society of Japan.

Teaching Experience 2015 Sep. – 2016 Mar. Space Explorers Program, Outreach and Tutoring, University of Chicago. 2009 Sep. – 2010 Mar. Quantum field theory, Teaching Assistant, Department of physics, University of Tokyo. 2009 Apr. – Aug. Quantum mechanics, Teaching Assistant, Department of physics, University of Tokyo. 2008 Sep. – 2009 Mar. Special relativity and electromagnetics, Teaching Assistant, Department of physics, University of Tokyo. Curriculum vitae —– Hayato Motohashi 3

Conference presentations Talks 34. “Constant-roll inflation”, Invited talk, 5th Korea-Japan workshop on Dark Energy: Starobinsky’s Universe, Korea Astronomy and Space Science Institute, Daejeon, South Korea, Aug. 6, 2018. 33. “Constant-roll inflation”, 15th Marcel Grossmann Meeting, University of Rome ”La Sapienza”, Italy, July 3, 2018. 32. “General Relativity solutions in modified gravity”, 15th Marcel Grossmann Meeting, University of Rome ”La Sapienza”, Italy, July 3, 2018. 31. “Primordial black holes and slow-roll violation”, 15th Marcel Grossmann Meeting, University of Rome ”La Sapienza”, Italy, July 3, 2018. 30. “Constructing ghost-free theories with higher derivatives”, 15th Marcel Grossmann Meeting, University of Rome ”La Sapienza”, Italy, July 2, 2018. 29. “Primordial black holes and optimized slow-roll approximation”, The first annual symposium of the innovative area ”Gravitational Wave Physics and Astronomy: Genesis”, Kashiwa, University of Tokyo, Mar. 5, 2018. 28. “Constructing ghost-free degenerate theories with higher derivatives”, YITP long-term workshop ”Gravity and Cosmology 2018”, YITP, Feb. 9, 2018. 27. “Constant-roll inflation”, International Symposium on Cosmology and Particle Astrophysics (CosPA 2017), YITP, Dec 11-15, 2017. 26. “Primordial black holes and slow-roll violation”, Area Workshop 2017A and group A joint boot camp, Tohoku University, Dec 7-9, 2017. 25. “Healthy degenerate theories with arbitrary higher-order derivatives”, The 27th Workshop on General Relativity and Gravitation in Japan (JGRG27), Saijo, Higashi-hiroshima, Nov 27-Dec 1, 2017. 24. “Healthy degenerate theories with arbitrary higher-order derivatives”, Dark Energy and Modified-Gravity cosmolo- gies: DARKMOD, Institut de Physique Theorique,´ CEA Saclay, September 11 - October 6, 2017. 23. “Primordial black holes and slow-roll violation”, Meeting on Fundamental Cosmology, Teruel, September 11-13, 2017. 22. “Constant-roll inflation”, PASCOS2017, IFT, Madrid, June 19-23, 2017. 21. “Degenerate theories with higher derivatives”, Symposium “Why does the Universe accelerate? - Exhaustive study and challenge for the future”, KEK, Japan, March 8-10, 2017. 20. “Constant-roll inflation”, Hot topics in Modern Cosmology: Spontaneous Workshop X, The Institut d’Etudes Sci- entifiques de Cargese` (IESC), France, May 9-14, 2016. 19. “Optimized evaluation approach for inflationary power spectra”, Meeting of the Division of Particles and Fields of American Physical Society (DPF2015), University of Michigan, Ann Arbor, MI, USA, August 4-8, 2015. 18. “Causal structure in self-accelerating massive gravity”, Spring 2015 Postdocs Symposium, Kavli Institute for Cos- mological Physics (KICP), University of Chicago, Chicago, USA, June 5, 2015. 17. “Stability of self-accelerating solutions in extended quasidilaton massive gravity”, The 24th Workshop on General Relativity and Gravitation (JGRG24), Kavli IPMU, University of Tokyo, Chiba, Japan, November 10-14, 2014. 16. “Cosmology with f (R) Gravity and Massive Neutrinos”, The 27th Texas Symposium on Relativistic Astrophysics, Texas, USA, December 8-13, 2013. 15. “Cosmology in f (R) Gravity with Massive Neutrinos”, Fall 2013 Postdocs Symposium, Kavli Institute for Cosmo- logical Physics (KICP), University of Chicago, Chicago, USA, November 15, 2013. 14.“ f (R) gravity and massive neutrinos”, IEU Cosmology Conference 2013, Institute for the Early Universe (IEU), Ewha Womans University, Seoul, Korea, June 3 - 5, 2013. 13. “Cosmological constraints on sterile neutrino mass in f (R) gravity”, JGRG 22, Tokyo University, Tokyo, Japan, November 12 - 16, 2012. 12.“ f (R) gravity and eV-mass sterile neutrinos”, COSMO 2012, Beijing, China, September 10 - 14, 2012. Curriculum vitae —– Hayato Motohashi 4

11. “Sterile neutrino and f (R) gravity”, RESCEU summer school, Fukushima, Japan, July 24 - 27, 2012. 10. “Black hole perturbation in modified gravity theories”, Thirteenth Marcell Grossmann Meeting, Stockholm Uni- versity, Sweden, July 1 - 7, 2012. 9.“ f (R) models for Primodial and Present Dark Energy”, Cosmology Workshop Montpellier 11, Laboratoire de Physique Theorique et Astroparticules (LPTA), Universite Montpellier, France, November3- 4, 2011. 8. “The unification of inflation and dark energy in extended f (R) gravity”, The 21st Workshop on General Relativity and Gravitation in Japan, Tohoku University, Miyagi, Japan, September 26 - 29, 2011. 7. “Constraints on f (R) gravity and neutrino mass from large scale structure”, 17th International Symposium on Particles, Strings and Cosmology (PASCOS), The University of Cambridge, UK, July 3 - 8, 2011. 6. “Matter power spectrum in f (R) gravity with SDSS DR7”, Extra-Dimension Probe by Cosmophysics, KEK (High Energy Accelerator Research Organisation), Tsukuba, Japan, November 9 - 12, 2010. 5.“ f (R) gravity and its cosmological implications”, Invited talk, The 2nd International Workshop on Dark Matter, Dark Energy and Matter-Antimatter Asymmetry, National Tsing Hua University, Hsinchu, Taiwan, November 5 - 6, 2010. 4. “Matter density fluctuation and massive neutrinos in f (R) gravity”, Horiba International Conference COSMO/CosPA 2010, The University of Tokyo, Tokyo, Japan, September 27 - October 1, 2010. 3. “Density fluctuation in f (R) gravity with massive neutrinos”, 10th RESCEU-DENET joint meeting & summer school ‘Dark Energy in the Universe’, Kouchi, Japan, August 29 - September 1, 2010. 2. “Evolution of density fluctuation in f (R) gravity”, The 19th Workshop on General Relativity and Gravitation in Japan, Rikkyo University, Tokyo, Japan, November 30 - December 4, 2009. 1. “Analytic solution for matter density perturbations in a class of viable cosmological f (R) models”, The Ninth Asia-Pacific International Conference on Gravitation and Astrophysics, Huazhong University of Science and Tech- nology, Wuhan, China, June 28 - July 2, 2009.

Posters 9. “Helathy degenerate theories with higher derivatives”, Hot topics in Modern Cosmology: Spontaneous Workshop X, The Institut d’Etudes Scientifiques de Cargese` (IESC), France, May 9-14, 2016. 8. “Stability of cosmological solutions in extended quasidilaton massive gravity”, Conference on Particle Physics and Cosmology (COSMO 2014), University of Chicago, Chiago, USA, August 25 - 29, 2014. 7. “Reheating after f (R) inflation and gravitational wave production”, 1st symposium on “New development in astro- physics through multimessenger observations of gravitational wave sources”, Osaka city University, Osaka, Japan, March 1 - 2, 2013. 6. “Constructing cosmological f (R) models for inflation and cosmic acceleration”, 11th RESCEU-DENET joint meeting & summer school ‘Dark Energy in the Universe’, Kumamoto, Japan, July 25 - 29, 2011. 5.“ f (R) gravity and large scale structure”, Essential Cosmology for the Next Generation, Puerto Vallarta, Mexico, January 10 - 14, 2011. 4. “Perturbation theory in f (R) gravity”, The 20th Workshop on General Relativity and Gravitation in Japan, Yukawa Institute for Theoretical Physics, Kyoto University Kyoto, Japan, September 21 - 25, 2010. 3. “Matter power spectrum in f (R) gravity with massive neutrinos”, Yukawa International Seminar 2010 (YKIS): Cosmology - The Next Generation -, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan, June 28 - July 2, 2010. 2. “Evolution of density fluctuation in f (R) gravity”, 9th RESCEU-DENET joint meeting & summer school ‘Dark Energy in the Universe’, Okinawa, Japan, August 30 - September 2, 2009. 1. “Evolution of density fluctuation in f (R) gravity”, IPMU international conference “Dark Energy: lighting up the darkness!”, IPMU, Chiba, Japan, June 22 - 26, 2009. Curriculum vitae —– Hayato Motohashi 5

Invited seminars 25. “Modified gravity with higher derivatives”, YITP lunch seminar, July 18, 2018. 24. “Constructing degenerate higher-order theories”, Laboratoire de Physique Theorique´ d’Orsay, France, June 28, 2018. 23. “Constructing degenerate higher-order theories”, Institut d’Astrophysique de Paris (IAP), Universite Pierre et Marie Curie, France, June 18, 2018. 22. “Constructing degenerate higher-order theories”, Astroparticle et Cosmologie (APC), Universite Paris Diderot- Paris 7, France, June 12, 2018. 21. “Constructing degenerate higher-order theories”, Institut de Physique Theorique,´ Saclay, France, May 23, 2018. 20. “General Relativity solution in modified gravity”, CENTRA, Instituto Superior Tecnico,´ Lisbon, Portugal, May 17, 2018. 19. “Constructing ghost-free degenerate theories with higher derivatives”, Yukawa Institute for Theoretical Physics, Kyoto University, Nov 14, 2017. 18. “Exorcising Ostrogradsky ghost: Construction of healthy higher-derivative theories”, Instituto de F´ısica Teorica,´ Madrid, June 26, 2017. 17. “Exorcising Ostrogradsky ghost: Construction of healthy higher-derivative theories”, CENTRA, Instituto Superior Tecnico,´ Lisbon, May 25, 2017. 16. “Degenerate theories with higher derivatives”, RESCEU, University of Tokyo, Feb 6, 2017. 15. “Healthy scalar-tensor theories with higher derivatives”, IFIC, University of Valencia, Jan 17, 2017. 14. “Superluminality, Cauchy surfaces, and strong coupling in self-accelerating massive gravity”, Case Western Re- serve University, OH, USA, June 16, 2015. 13. “Cosmological consequences of f (R) modified gravity for accelerated expansion of the Universe”, Kyoto Univer- sity, Yukawa Institute for Theoretical Physics, Kyoto, Japan, Apr. 18, 2013. 12. “Inflation and reheating in f (R) gravity”, Nagoya University, Gravity and Particle Cosmology Group, Nagoya, Japan, November 2, 2012. 11.“ f (R) gravity and cosmology”, University of Tokyo, High Energy Physics Theory Group, Tokyo, Japan, October 15, 2012. 10. “Cosmic evolution in f (R) gravity”, Helsinki University, Helsinki, Finland, June 28, 2012. 9.“ f (R) models for the early and the present acceleration of the Universe”, High Energy Accelerator Research Orga- nization (KEK), Tsukuba, Japan, February 13, 2012. 8. “Unified f (R) models of inflation and dark energy”, Institut d’Astrophysique de Paris (IAP), Universite Pierre et Marie Curie, France, November 9, 2011. 7. “Combined description of primordial and present dark energy in f (R) gravity”, Astroparticle et Cosmologie (APC), Universite Paris Diderot-Paris 7, France, November 8, 2011. 6. “Viable f (R) models for primordial and present cosmic acceleration”, Centre de Physique Theorique (CPT), Uni- versite Marseille, France, November 1, 2011. 5.“ f (R) gravity and its cosmological consequences”, Waseda University, Tokyo, Japan, July 22, 2011. 4. “Cosmological implications of f (R) gravity”, ICG, The University of Portsmouth, UK, June 29, 2011. 3. “Cosmological imprints of f (R) gravity”, Cosmos Seminar, TCC, The University of Texas at Austin, USA, January 19, 2011. 2. “Cosmological consequences of f (R) gravity”, Open Group Seminar, KICP, The University of Chicago, USA, January 6, 2011. 1.“ f (R) gravity and its implications for cosmology”, LeCOSPA, National Taiwan University, Taiwan, November 4, 2010. Curriculum vitae —– Hayato Motohashi 6

References

Prof. Wayne Hu Prof. Claudia de Rham Kavli Institute for Cosmological Physics Imperial College London University of Chicago South Kensington Campus, London SW7 2AZ, UK 5640 South Ellis Avenue, Chicago, IL 60637, USA [email protected] [email protected] +44(0)20-7594-7827 +1(773)702-0160

Prof. David Langlois Laboratoire Astroparticule et Cosmologie Prof. Jer´ omeˆ Martin Universite´ Paris Diderot Paris 7 Institut Astrophysique de Paris 10 rue Alice Domon et Leonie´ Duquet, 98 bis boulevard Arago, 75014 Paris, France 75013 Paris, France [email protected] [email protected] +33(1)44-32-81-67 +33(1)57-27-60-98

Prof. Shinji Mukohyama Prof. Olga Mena Yukawa Institute for Theoretical Physics Instituto de F´ısica Corpuscolar (IFIC), Kyoto University Universidad de Valencia-CSIC Kitashirakawa Oiwakecho, Sakyo-ku, C/ Catedratico´ Jose´ Beltran,´ 2, E-46980, Valencia, Spain Kyoto 606-8502 Japan [email protected] [email protected] +34-963543534 +81-75-753-7061

Prof. Alexei Starobinsky Prof. Teruaki Suyama Landau Institute for Theoretical Physics Tokyo Institute of Technology 119334, Moscow, Kosygina st., 2, Russia 2-12-1 Ookayama, Meguro, Tokyo 152-8551 Japan [email protected] [email protected] +7(499)137-32-44 +81(3)5734-2364

Prof. Jun’ichi Yokoyama Prof. Masahide Yamaguchi Research Center for the Early Universe Tokyo Institute of Technology University of Tokyo 2-12-1 Ookayama, Meguro, Tokyo 152-8551 Japan 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan [email protected] [email protected] +81(3)5734-2364 +81(3)5841-7637