Updated on 2024/07/10

写真a

 
TERADA Takahiro
 
Organization
Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI) Designated assistant professor
Title
Designated assistant professor
 

Papers 43

  1. Quintessential interpretation of the evolving dark energy in light of DESI observations

    Yuichiro TADA, Takahiro Terada

    Phys.Rev.D   Vol. 109 ( 12 )   2024.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.109.L121305

    Scopus

    arXiv

  2. Dissipative genesis of the inflationary universe

    Matsui, Hiroki, Papageorgiou, Alexandros, Takahashi, Fuminobu, Takahiro Terada

    Phys.Rev.D   Vol. 109 ( 10 )   2024.5

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.109.L101303

    arXiv

  3. Dissipative emergence of inflation from a quasicyclic universe

    Matsui, Hiroki, Papageorgiou, Alexandros, Takahashi, Fuminobu, Takahiro Terada

    Phys.Rev.D   Vol. 109 ( 10 ) page: 103523 - 103523   2024.5

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.109.103523

    arXiv

  4. Detected stochastic gravitational waves and subsolar-mass primordial black holes

    Keisuke Inomata, Kazunori Kohri, Takahiro Terada

    Phys.Rev.D   Vol. 109 ( 6 ) page: 063506 - 063506   2024.3

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.109.063506

    arXiv

  5. Cancellation of quantum corrections on the soft curvature perturbations

    Yuichiro TADA, Takahiro Terada, Junsei Tokuda

    JHEP   Vol. 01 ( 1 ) page: 105 - 105   2024.1

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP01(2024)105

    Web of Science

    Scopus

    arXiv

  6. Induced gravitational waves with kination era for recent pulsar timing array signals

    Harigaya, Keisuke, Keisuke Inomata, Takahiro Terada

    Phys.Rev.D   Vol. 108 ( 12 ) page: 123538 - 123538   2023.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.108.123538

    arXiv

  7. Gravitational wave production from axion rotations right after a transition to kination

    Harigaya, Keisuke, Keisuke Inomata, Terada, Takahiro

    Phys.Rev.D   Vol. 108 ( 8 )   2023.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.108.L081303

    arXiv

  8. Inflationary α-attractor models with singular derivative of potential

    Kubota, Kei-ichiro, Matsui, Hiroki, Terada, Takahiro

    JCAP   Vol. 07   page: 011 - 011   2023.7

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1475-7516/2023/07/011

    arXiv

  9. Threshold of primordial black hole formation against velocity dispersion in matter-dominated era

    Harada, Tomohiro, Kohri, Kazunori, Sasaki, Misao, Terada, Takahiro, Yoo, Chul-Moon

    JCAP   Vol. 02 ( 2 ) page: 038 - 038   2023.2

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1475-7516/2023/02/038

    Web of Science

    Scopus

    arXiv

  10. Constrained superfields in dynamical background

    Aoki, Shuntaro, Takahiro Terada

    JHEP   Vol. 02   page: 177 - 177   2022.2

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP02(2022)177

    arXiv

  11. Massless preheating and electroweak vacuum metastability

    Kost, Jeff, Shin, Chang Sub, Terada, Takahiro

    Phys.Rev.D   Vol. 105 ( 4 ) page: 043508 - 043508   2022.2

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.105.043508

    arXiv

  12. Minimal supergravity inflation without slow gravitino

    Terada, Takahiro

    Phys.Rev.D   Vol. 103 ( 12 ) page: 125022 - 125022   2021.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.103.125022

    arXiv

  13. Solar-Mass Primordial Black Holes Explain NANOGrav Hint of Gravitational Waves

    Kohri, Kazunori, Takahiro Terada

    Phys.Lett.B   Vol. 813   page: 136040 - 136040   2021.2

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.physletb.2020.136040

    arXiv

  14. Swampland Constraints on No-Boundary Quantum Cosmology

    Hiroki Matsui, Terada, Takahiro

    JHEP   Vol. 10   page: 162 - 162   2020.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP10(2020)162

    arXiv

  15. Gravitational Wave Production right after a Primordial Black Hole Evaporation

    Inomata, Keisuke, Kawasaki, Masahiro, Mukaida, Kyohei, Terada, Takahiro, Yanagida, Tsutomu T.

    Phys.Rev.D   Vol. 101 ( 12 ) page: 123533 - 123533   2020.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.101.123533

    arXiv

  16. Gauge Independence of Induced Gravitational Waves

    Inomata, Keisuke, Terada, Takahiro

    Phys.Rev.D   Vol. 101 ( 2 ) page: 023523 - 023523   2020.1

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.101.023523

    arXiv

  17. Trans-Planckian censorship and single-field inflaton potential

    Kadota, Kenji, Shin, Chang Sub, Terada, Takahiro, Tumurtushaa, Gansukh

    JCAP   Vol. 01 ( 01 ) page: 008 - 008   2020.1

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1475-7516/2020/01/008

    arXiv

  18. Clustering of primordial black holes formed in a matter-dominated epoch

    Matsubara, Takahiko, Terada, Takahiro, Kohri, Kazunori, Yokoyama, Shuichiro

    Phys.Rev.D   Vol. 100 ( 12 ) page: 123544 - 123544   2019.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.100.123544

    Web of Science

    Scopus

    arXiv

  19. Gravitational Waves Induced by Scalar Perturbations during a Gradual Transition from an Early Matter Era to the Radiation Era

    Inomata, Keisuke, Kohri, Kazunori, Nakama, Tomohiro, Terada, Takahiro

    JCAP   Vol. 10   page: 071 - 071   2019.10

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1475-7516/2019/10/071

    arXiv

  20. Enhancement of Gravitational Waves Induced by Scalar Perturbations due to a Sudden Transition from an Early Matter Era to the Radiation Era

    Keisuke Inomata, Kohri, Kazunori, Nakama, Tomohiro, Terada, Takahiro

    Phys.Rev.D   Vol. 100   page: 043532 - 043532   2019.8

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.108.049901

    arXiv

  21. Non-singular bouncing cosmology with positive spatial curvature and flat scalar potential

    Matsui, Hiroki, Takahashi, Fuminobu, Takahiro Terada

    Phys.Lett.B   Vol. 795   page: 152 - 159   2019.8

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.physletb.2019.06.013

    arXiv

  22. Prospective constraints on the primordial black hole abundance from the stochastic gravitational-wave backgrounds produced by coalescing events and curvature perturbations

    Wang, Sai, Terada, Takahiro, Kohri, Kazunori

    Phys.Rev.D   Vol. 99 ( 10 ) page: 103531 - 103531   2019.5

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.99.103531

    arXiv

  23. Primordial Black Hole Dark Matter and LIGO/Virgo Merger Rate from Inflation with Running Spectral Indices: Formation in the Matter- and/or Radiation-Dominated Universe

    Kohri, Kazunori, Takahiro Terada

    Class.Quant.Grav.   Vol. 35 ( 23 ) page: 235017 - 235017   2018.11

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1361-6382/aaea18

    arXiv

  24. Unitarity constraint on the Kähler curvature

    Ema, Yohei, Kitano, Ryuichiro, Terada, Takahiro

    JHEP   Vol. 09   page: 075 - 075   2018.9

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP09(2018)075

    arXiv

  25. Semianalytic calculation of gravitational wave spectrum nonlinearly induced from primordial curvature perturbations

    Kohri, Kazunori, Terada, Takahiro

    Phys.Rev.D   Vol. 97 ( 12 ) page: 123532 - 123532   2018.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.97.123532

    arXiv

  26. Gravitino problem in inflation driven by inflaton-polonyi Kähler coupling

    Hasegawa, Fuminori, Nakayama, Kazunori, Takahiro Terada, Yamada, Yusuke

    Phys.Lett.B   Vol. 777   page: 270 - 274   2018.2

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.physletb.2017.12.038

    arXiv

  27. Gravitino Problem in Minimal Supergravity Inflation

    Hasegawa, Fuminori, Mukaida, Kyohei, Nakayama, Kazunori, Takahiro Terada, Yamada, Yusuke

    Phys.Lett.B   Vol. 767   page: 392 - 397   2017.4

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.physletb.2017.02.030

    arXiv

  28. Curvaton as dark matter with secondary inflation

    Gong, Jinn-Ouk, Kitajima, Naoya, Terada, Takahiro

    JCAP   Vol. 03   page: 053 - 053   2017.3

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1475-7516/2017/03/053

    arXiv

  29. Reinterpretation of the Starobinsky model

    Asaka, Takehiko, Iso, Satoshi, Kawai, Hikaru, Kohri, Kazunori, Noumi, Toshifumi, Takahiro Terada

    PTEP   Vol. 2016 ( 12 )   2016.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1093/ptep/ptw161

    arXiv

  30. Nonthermal Gravitino Production after Large Field Inflation

    Ema, Yohei, Mukaida, Kyohei, Nakayama, Kazunori, Terada, Takahiro

    JHEP   Vol. 11   page: 184 - 184   2016.11

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP11(2016)184

    arXiv

  31. Generalized Pole Inflation: Hilltop, Natural, and Chaotic Inflationary Attractors

    Terada, Takahiro

    Phys.Lett.B   Vol. 760   page: 674 - 680   2016.9

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.physletb.2016.07.058

    arXiv

  32. On SUSY Restoration in Single-Superfield Inflationary Models of Supergravity

    Ketov, Sergei V., Terada, Takahiro

    Eur.Phys.J.C   Vol. 76 ( 8 ) page: 438 - 438   2016.8

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1140/epjc/s10052-016-4283-6

    arXiv

  33. Testing ATLAS Z+MET Excess with LHC Run 2

    Lu, Xiaochuan, Shirai, Satoshi, Terada, Takahiro

    JHEP   Vol. 05   page: 108 - 108   2016.5

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP05(2016)108

    arXiv

  34. Structure of Kähler potential for D-term inflationary attractor models

    Nakayama, Kazunori, Saikawa, Ken'ichi, Terada, Takahiro, Yamaguchi, Masahide

    JHEP   Vol. 05   page: 067 - 067   2016.5

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP05(2016)067

    arXiv

  35. Single-Superfield Helical-Phase Inflation

    Ketov, Sergei V., Terada, Takahiro

    Phys.Lett.B   Vol. 752   page: 108 - 112   2016.1

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.physletb.2015.11.039

    arXiv

  36. ATLAS $Z$ Excess in Minimal Supersymmetric Standard Model

    Lu, Xiaochuan, Shirai, Satoshi, Terada, Takahiro

    JHEP   Vol. 09   page: 204 - 204   2015.9

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP09(2015)204

    arXiv

  37. Reheating processes after Starobinsky inflation in old-minimal supergravity

    Terada, Takahiro, Watanabe, Yuki, Yamada, Yusuke, Yokoyama, Jun'ichi

    JHEP   Vol. 02   page: 105 - 105   2015.2

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP02(2015)105

    arXiv

  38. Generic Scalar Potentials for Inflation in Supergravity with a Single Chiral Superfield

    Ketov, Sergei V., Terada, Takahiro

    JHEP   Vol. 12   page: 062 - 062   2014.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP12(2014)062

    arXiv

  39. Inflation in supergravity with a single chiral superfield

    Ketov, Sergei V., Terada, Takahiro

    Phys.Lett.B   Vol. 736   page: 272 - 277   2014.9

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.physletb.2014.07.036

    arXiv

  40. Complexified Starobinsky Inflation in Supergravity in the Light of Recent BICEP2 Result

    Hamaguchi, Koichi, Moroi, Takeo, Terada, Takahiro

    Phys.Lett.B   Vol. 733   page: 305 - 308   2014.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.physletb.2014.05.006

    arXiv

  41. Old-minimal supergravity models of inflation

    Ketov, Sergei V., Terada, Takahiro

    JHEP   Vol. 12   page: 040 - 040   2013

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP12(2013)040

    arXiv

  42. New Actions for Modified Gravity and Supergravity

    Ketov, Sergei V., Terada, Takahiro

    JHEP   Vol. 07   page: 127 - 127   2013

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/JHEP07(2013)127

    arXiv

  43. Scalar Decay into Gravitinos in the Presence of D-term SUSY Breaking

    Endo, Motoi, Hamaguchi, Koichi, Terada, Takahiro

    Phys.Rev.D   Vol. 86   page: 083543 - 083543   2012

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevD.86.083543

    arXiv

▼display all

MISC 3

  1. The International Linear Collider: Report to Snowmass 2021

    Alexander Aryshev, Ties Behnke, Mikael Berggren, James Brau, Nathaniel Craig, Ayres Freitas, Frank Gaede, Spencer Gessner, Stefania Gori, Christophe Grojean, Sven Heinemeyer, Daniel Jeans, Katja Kruger, Benno List, Jenny List, Zhen Liu, Shinichiro Michizono, David W. Miller, Ian Moult, Hitoshi Murayama, Tatsuya Nakada, Emilio Nanni, Mihoko Nojiri, Hasan Padamsee, Maxim Perelstein, Michael E. Peskin, Roman Poeschl, Sam Posen, Aidan Robson, Jan Strube, Taikan Suehara, Junping Tian, Maxim Titov, Marcel Vos, Andrew White, Graham Wilson, Kaoru Yokoya, Aleksander Filip Zarnecki, Ichiro Adachi, Kaustubh Agashe, Tatjana Agatonovic Jovin, Hiroaki Aihara, Wolfgang Altmannshofer, Daniele Alves, Justin Anguiano, Ken-Ichi Aoki, Masato Aoki, Toshihiro Aoki, Yumi Aoki, Yasuo Arai, Hayato Araki, Haruka Asada, Kento Asai, Shoji Asai, David Attie, Howard Baer, Jonathan Bagger, Yang Bai, Ian Bailey, Ricardo Barrue, Rainer Bartoldus, Emanuela Barzi, Matthew Basso, Lothar Bauerdick, Sebastian Baum, Alain Bellerive, Sergey Belomestnykh, Jorge Berenguer Antequera, Jakob Beyer, Pushpalatha Bhat, Burak Bilki, Kevin Black, Kenneth Bloom, Geoffrey Bodwin, Veronique Boisvert, Fatma Boran, Vincent Boudry, Radja Boughezal, Antonio Boveia, Ivanka Bozovic-Jelisavcic, Jean-Claude Brient, Stanley Brodsky, Laurent Brunetti, Karsten Buesser, Eugene Bulyak, Philip N. Burrows, Graeme C. Burt, Yunhai Cai, Valentina Cairo, Anadi Canepa, Francesco Giovanni Celiberto, Enrico Cenni, Zackaria Chacko, Iryna Chaikovska, Mattia Checchin, Lisong Chen, Thomas Y. Chen, Hsin Chia Cheng, Gi-Chol Cho, Brajesh Choudhary, Jim Clarke, James Cline, Raymond Co, Timothy Cohen, Paul Colas, Chris Damerell, Arindam Das, Sridhara Dasu, Sally Dawson, Jorge de Blas, Carlos Henrique de Lima, Aldo Deandrea, Klaus Dehmelt, Jean Delayen, Carlos Henrique de Lima, Marcel Demarteau, Dmitri Denisov, Radovan Dermisek, Angel Dieguez, Takeshi Dohmae, Jens Dopke, Katharina Dort, Yong Du, Bohdan Dudar, Bhaskar Dutta, Juhi Dutta, Ulrich Einhaus, Eckhard Elsen, Motoi Endo, Grigory Eremeev, Engin Eren, Jens Erler, Eric Esarey, Lisa Everett, Angeles Faus Golfe, Marcos Fernandez Garcia, Brian Foster, Nicolas Fourches, Mary-Cruz Fouz, Keisuke Fujii, Junpei Fujimoto, Esteban Fullan Torregrosa, Kazuro Furukawa, Takahiro Fusayasu, Juan Fuster, Serguei Ganjour, Yuanning Gao, Naveen Gaur, Rongli Geng, Howard Georgi, Tony Gherghetta, Joel Goldstein, Dorival Goncalves, Julia Gonski, Tomas Gonzalo, Takeyoshi Goto, Toru Goto, Norman Graf, Joseph Grames, Paul Grannis, Lindsey Gray, Alexander Grohsjean, Jiayin Gu, Yalcin Guler, Phillip Gutierrez, Junji Haba, Howard Haber, John Hallford, Koichi Hamaguchi, Tao Han, Kazuhiko Hara, Daisuke Harada, Koji Hashimoto, Katsuya Hashino, Masahito Hayashi, Gudrun Heinrich, Keisho Hidaka, Takeo Higuchi, Fujio Hinode, Zenro Hioki, Minoru Hirose, Nagisa Hiroshima, Junji Hisano, Wolfgang Hollik, Samuel Homiller, Sungwoo Hong, Anson Hook, Yasuyuki Horii, Hiroki Hoshina, Ivana Hristova, Katri Huitu, Yoshifumi Hyakutake, Toru Iijima, Katsumasa Ikematsu, Anton Ilderton, Kenji Inami, Adrian Irles, Akimasa Ishikawa, Koji Ishiwata, Hayato Ito, Igor Ivanov, Sho Iwamoto, Toshiyuki Iwamoto, Masako Iwasaki, Yoshihisa Iwashita, Haoyi Jia, Fabricio Jimenez Morales, Prakash Joshi, Sunghoon Jung, Goran Kacarevic, Michael Kagan, Mitsuru Kakizaki, Jan Kalinowski, Jochen Kaminski, Kazuyuki Kanaya, Shinya Kanemura, Hayato Kanno, Yuya Kano, Shigeru Kashiwagi, Yukihiro Kato, Nanami Kawada, Shin-ichi Kawada, Kiyotomo Kawagoe, Valery Khoze, Hiromichi Kichimi, Doojin Kim, Teppei Kitahara, Ryuichiro Kitano, Jan Klamka, Sachio Komamiya, K. C. Kong, Taro Konomi, Katsushige Kotera, Emi Kou, Ilya Kravchenko, Kiyoshi Kubo, Takayuki Kubo, Takuya Kumaoka, Ashish Kumar, Nilanjana Kumar, Jonas Kunath, Saumyen Kundu, Hiroshi Kunitomo, Masakazu Kurata, Masao Kuriki, Alexander Kusenko, Theodota Lagouri, Andrew J. Lankford, Gordana Lastovicka-Medin, Francois Le Diberder, Claire Lee, Matthias Liepe, Jacob Linacre, Zachary Liptak, Shivani Lomte, Ian Low, Yang Ma, Hani Maalouf, David MacFarlane, Brendon Madison, Thomas Madlener, Tomohito Maeda, Paul Malek, Sanjoy Mandal, Thomas Markiewicz, John Marshall, Aurelien Martens, Victoria Martin, Martina Martinello, Celso Martinez Rivero, Nobuhito Maru, John Matheson, Shigeki Matsumoto, Hiroyuki Matsunaga, Yutaka Matsuo, Kentarou Mawatari, Johnpaul Mbagwu, Peter McIntosh, Peter McKeown, Patrick Meade, Krzysztof Mekala, Petra Merkel, Satoshi Mihara, Víctor Miralles, Marcos Miralles Lopez, Go Mishima, Satoshi Mishima, Bernhard Mistlberger, Alexander Mitov, Kenkichi Miyabayashi, Akiya Miyamoto, Gagan Mohanty, Laura Monaco, Myriam Mondragon, Hugh E. Montgomery, Gudrid Moortgat-Pick, Nicolas Morange, María Moreno Llacer, Stefano Moretti, Toshinori Mori, Toshiyuki Morii, Takeo Moroi, David Morrissey, Benjamin Nachman, Kunihiro Nagano, Jurina Nakajima, Eiji Nakamura, Shinya Narita, Pran Nath, Timothy Nelson, David Newbold, Atsuya Niki, Yasuhiro Nishimura, Eisaku Nishiyama, Yasunori Nomura, Kacper Nowak, Mitsuaki Nozaki, María Teresa Nunez Pardo de Vera, Ines Ochoa, Masahito Ogata, Satoru Ohashi, Hikaru Ohta, Shigemi Ohta, Norihito Ohuchi, Hideyuki Oide, Nobuchika Okada, Yasuhiro Okada, Shohei Okawa, Yuichi Okayasu, Yuichi Okugawa, Toshiyuki Okugi, Takemichi Okui, Yoshitaka Okuyama, Mathieu Omet, Tsunehiko Omori, Hiroaki Ono, Tomoki Onoe, Wataru Ootani, Hidetoshi Otono, Shuhei Ozawa, Simone Pagan Griso, Alessandro Papa, Rocco Paparella, Eun-Kyung Park, Gilad Perez, Abdel Perez-Lorenzana, Yvonne Peters, Frank Petriello, Jonatan Piedra, Werner Porod, Christopher Potter, Alan Price, Yasser Radkhorrami, Laura Reina, Juergen Reuter, Francois Richard, Sabine Riemann, Robert Rimmer, Thomas Rizzo, Tania Robens, Roger Ruber, Alberto Ruiz Jimeno, Takayuki Saeki, Ipsita Saha, Tomoyuki Saito, Makoto Sakaguchi, Tadakatsu Sakai, Yasuhito Sakaki, Kodai Sakurai, Riccardo Salvatico, Fabrizio Salvatore, Yik Chuen San, Pearl Sandick, Tomoyuki Sanuki, Kollassery Swathi Sasikumar, Oliver Schaefer, Ruth Schaefer, Uwe Schneekloth, Thomas Schoerner-Sadenius, Carl Schroeder, Philip Schuster, Ariel Schwartzman, Reinhard Schwienhorst, Felix Sefkow, Yoshihiro Seiya, Motoo Sekiguchi, Kazuyuki Sekizawa, Katsumi Senyo, Hale Sert, Danielev Sertore, Ronald Settles, Qaisar Shafi, Tetsuo Shahdara, Barmak Shams Es Haghi, Ashish Sharma, Jessie Shelton, Claire Shepherd-Themistocleous, Hiroto Shibuya, Tetsuo Shidara, Takashi Shimomura, Tetsuo Shindou, Yutaro Shoji, Jing Shu, Ian Sievers, Frank Simon, Rajeev Singh, Yotam Soreq, Marcel Stanitzki, Steinar Stapnes, Amanda Steinhebel, John Stupak, Shufang Su, Fumihiko Suekane, Akio Sugamoto, Yuji Sugawara, Satoru Sugimoto, Yasuhiro Sugimoto, Hiroaki Sugiyama, Yukinari Sumino, Raman Sundrum, Atsuto Suzuki, Shin Suzuki, Maximilian Swiatlowski, Tim M. P. Tait, Shota Takahashi, Tohru Takahashi, Tohru Takeshita, Michihisa Takeuchi, Yosuke Takubo, Tomohiko Tanabe, Philip Tanedo, Morimitsu Tanimoto, Shuichiro Tao, Xerxes Tata, Toshiaki Tauchi, Geoffrey Taylor, Takahiro Terada, Nobuhiro Terunuma, Jesse Thaler, Alessandro Thea, Finn Tillinger, Jan Timmermans, Kohsaku Tobioka, Kouichi Toda, Atsushi Tokiyasu, Takashi Toma, Julie Torndal, Mehmet Tosun, Yu-Dai Tsai, Shih-Yen Tseng, Koji Tsumura, Douglas Tuckler, Yoshiki Uchida, Yusuke Uchiyama, Daiki Ueda, Fumihiko Ukegawa, Kensei Umemori, Junji Urakawa, Claude Vallee, Roberto Vega, Liliana Velasco, Silvia Verdu-Andres, Caterina Vernieri, Anna Vila, Ivan Vila Alvarez, Joost Vossebeld, Raghava Vsrms, Natasa Vukasinovic, Doreen Wackeroth, Moe Wakida, Liantao Wang, Masakazu Washio, Takashi Watanabe, Nigel Watson, Gordon Watts, Georg Weiglein, James D. Wells, Marc Wenskat, Susanne Westhoff, Glen White, Ciaran Williams, Stephane Willocq, Matthew Wing, Alasdair Winter, Marc Winter, Yongcheng Wu, Keping Xie, Tao Xu, Vyacheslav Yakovlev, Shuei Yamada, Akira Yamamoto, Hitoshi Yamamoto, Kei Yamamoto, Yasuchika Yamamoto, Masato Yamanaka, Satoru Yamashita, Masahiro Yamatani, Naoki Yamatsu, Shigehiro Yasui, Takuya Yoda, Ryo Yonamine, Keisuke Yoshihara, Masakazu Yoshioka, Tamaki Yoshioka, Fukuko Yuasa, Keita Yumino, Dirk Zerwas, Ya-Juan Zheng, Jia Zhou, Hua Xing Zhu, Mikhail Zobov, Fabian Zomer

        2022.3

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    The International Linear Collider (ILC) is on the table now as a new global
    energy-frontier accelerator laboratory taking data in the 2030s. The ILC
    addresses key questions for our current understanding of particle physics. It
    is based on a proven accelerator technology. Its experiments will challenge the
    Standard Model of particle physics and will provide a new window to look beyond
    it. This document brings the story of the ILC up to date, emphasizing its
    strong physics motivation, its readiness for construction, and the opportunity
    it presents to the US and the global particle physics community.

    arXiv

    Other Link: http://arxiv.org/pdf/2203.07622v3

  2. Inflation in Supergravity with a Single Superfield

    Takahiro Terada

        2015.8

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    Supergravity is a well-motivated theory beyond the standard model of particle
    physics, and a suitable arena to study high-energy physics at the early
    universe including inflation, whose observational evidences are growing more
    and more. Inflation in supergravity, however, cannot be easily described
    because of restrictions from supersymmetry (SUSY). The scalar potential has an
    exponential factor and a large negative term whereas a flat and positive
    potential is needed to realize inflation. The standard method to obtain such an
    inflationary scalar potential requires an additional superfield to the one
    containing inflaton. In this thesis, we propose and develop an alternative
    method which does not require the additional superfield and thus reduces the
    necessary degrees of freedom by half. That is, we study inflation in
    supergravity with only a single chiral superfield which contains inflaton. We
    accomplish it by introducing a higher dimensional term in the inflaton Kahler
    potential, which plays an important dual role: fixing the value of the scalar
    superpartner of the inflaton resulting in effective single field models, and
    ensuring the positivity of the inflaton potential at the large field region.
    Our proposal is not just particular models but rather a new framework to
    realize various inflationary models in supergravity. In particular, large field
    inflation in supergravity using one superfield without tuning has become
    possible for the first time. In our generic models, SUSY breaking at the
    inflationary scale by inflaton is not completely restored after inflation, so
    null results for SUSY search at the LHC are predicted for the simplest cases.
    Remarkably, however, it is possible with tuning to embed arbitrary positive
    semidefinite scalar potentials into supergravity preserving SUSY at the vacuum.
    Our discovery opens up an entirely new branch of model building of inflation in
    supergravity.

    arXiv

    Other Link: http://arxiv.org/pdf/1508.05335v1

  3. Toward Higgs inflation in the MSSM

    Takahiro Terada

        2015.4

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    Adopting a recently proposed single-superfield framework of supergravity
    inflation, we consider large field inflationary models in which MSSM Higgs-like
    fields play the role of the inflaton. In the simplest cases, the inflaton
    potential has a fractional power, which is different from that of the original
    Higgs inflation, and it can be tested by cosmological observations in near
    future. We find difficulties in identifying the inflaton with the MSSM Higgses
    and discuss possible candidates of the inflaton.

    arXiv

    Other Link: http://arxiv.org/pdf/1504.06230v1

KAKENHI (Grants-in-Aid for Scientific Research) 2

  1. Frontiers of inflation in supergravity

    Grant number:17J00731  2017.4 - 2020.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for JSPS Fellows

  2. 超重力理論の拡張と宇宙論

    Grant number:14J10619  2014.4 - 2016.3

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    寺田 隆広

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    本年度は主に、修正重力理論の一種であるスカラー・テンソル理論を超対称化した超重力理論を題材とした研究を行った。具体的には、前年度に発見した「単一の超場による超重力理論」を発展させ、最小超対称標準模型でのヒッグス・インフレーションに応用できるかを議論した。シンプルな仮定の下では成功しないことを結論付けたが、大統一理論のヒッグスなど、より一般の条件下での応用可能性がある。ヒッグス粒子は2012年に発見されており、この粒子に対応する場がインフレーションを引き起こしたかどうかは非常に興味深い疑問である。それを実現する模型の候補を制限したという意義がある。また、近年超重力理論でインフレーションを起こす方法として新たに見つかった「螺旋位相インフレーション」を、単一超場の枠組みでも実現できる事を示した。モノドロミーという特異性を許せば多様なインフレーション模型が実現可能である。一方、モノドロミー無しのシンプルな場合には、ナチュラル・インフレーションの超重力理論での最小の実現が可能である。これには、超重力理論でのインフレーション機構の新発見という意義の他に、ナチュラル・インフレーションをより基礎的な理論で記述できるようにしたという意義がある。研究実施計画に記述した国際研究会においてこれらの発見を発表した。この他に、年度内には雑誌掲載が決まらなかったがarXivに発表済みの研究として、インフレーション・アトラクター模型及び極インフレーションに関するものがある。極インフレーションの性質を一般化に調べ、多様なインフレーション模型が実現され得る事を発見した。超重力理論ではF項またはD項によってインフレーションが起きるが、殆ど議論されていなかった後者でのアトラクター機構を明確にした。これらはインフレーションの予言の普遍性及び多様性と、その背後にある理論の構造を明らかにしたという意義がある。