
Weakfield regime of scalartensor theories with an instantaneous mode
Peerreviewed
Tsutomu Kobayashi, Takashi Hiramatsu
Physical Review D109
(
6
)
064091
29 3 2024

Stringwall composites winding around a torus knot vacuum in an axionlike model
Peerreviewed
Minoru Eto, Takashi Hiramatsu, Izumi Saito, Yuki Sakakihara
Physical Review D108
(
11
)
116004
5 12 2023

Cosmological gravity probes: connecting recent theoretical developments to forthcoming observations
Peerreviewed
Shun Arai, Katsuki Aoki, Yuji Chinone, Rampei Kimura, Tsutomu Kobayashi, Hironao Miyatake, Daisuke Yamauchi, Shuichiro Yokoyama, Kazuyuki Akitsu, Takashi Hiramatsu, Shin’ichi Hirano, Ryotaro Kase, Taishi Katsuragawa, Yosuke Kobayashi, Toshiya Namikawa, Takahiro Nishimichi, Teppei Okumura, Maresuke Shiraishi, Masato Shirasaki, Tomomi Sunayama, Kazufumi Takahashi, Atsushi Taruya, Junsei Tokuda
Progress of Theoretical and Experimental Physics2023
(
7
)
27 4 2023

CMB constraints on DHOST theories
Peerreviewed
Takashi Hiramatsu
Journal of Cosmology and Astroparticle Physics2022
(
10
)
035

035
1 10 2022

Testing gravity with the cosmic microwave background: constraints on modified gravity with two tensorial degrees of freedom
Peerreviewed
Takashi Hiramatsu, Tsutomu Kobayashi
Journal of Cosmology and Astroparticle Physics2022
(
07
)
040

040
1 7 2022

Gauge kinetic mixing and dark topological defects
Peerreviewed
Takashi Hiramatsu, Masahiro Ibe, Motoo Suzuki, Soma Yamaguchi
Journal of High Energy Physics2021
(
12
)
122

122
17 12 2021

Gravitational wave spectra from oscillon formation after inflation
Peerreviewed
Takashi Hiramatsu, Evangelos I. Sfakianakis, Masahide Yamaguchi
Journal of High Energy Physics2021
(
3
)
021

021
2 3 2021

Statisticallyanisotropic tensor bispectrum from inflation
Peerreviewed
Takashi Hiramatsu, Kai Murai, Ippei Obata, Shuichiro Yokoyama
Journal of Cosmology and Astroparticle Physics2021
(
03
)
047

047
1 3 2021

Testing gravity theories with cosmic microwave background in the degenerate higherorder scalartensor theory
Peerreviewed
Takashi Hiramatsu, Daisuke Yamauchi
Physical Review D102
(
8
)
083525
19 10 2020

Cosmic string in AbelianHiggs model with enhanced symmetry — Implication to the axion domainwall problem
Peerreviewed
Takashi Hiramatsu, Masahiro Ibe, Motoo Suzuki
Journal of High Energy Physics2020
(
9
)
054
9 2020

New Type of String Solutions with Long Range Forces
Peerreviewed
Takashi Hiramatsu, Masahiro Ibe, Motoo Suzuki
Journal of High Energy Physics2002
058
2 2020

Testing Seesaw and Leptogenesis with Gravitational Waves
Peerreviewed
Jeff A. Dror, Takashi Hiramatsu, Kazunori Kohri, Hitoshi Murayama, Graham White
Physical Review Letters124
041804
8 8 2019

Hunting for Statistical Anisotropy in Tensor Modes with Bmode Observations
Peerreviewed
Takashi Hiramatsu, Shuichiro Yokoyama, Tomohiro Fujita, Ippei Obata
D98
083522
10 2018

Reconstruction of primordial tensor power spectra from Bmode polarization of the cosmic microwave background
Peerreviewed
Takashi Hiramatsu, Eiichiro Komatsu, Masashi Hazumi, Misao Sasaki
Physical ReviewD97
123511
6 2018

Relativistic stars in degenerate higherorder scalartensor theories after GW170817
Peerreviewed
Tsutomu Kobayashi, Takashi Hiramatsu
Physical Review D97
(
10
)
104012
15 5 2018

Antiscreening of the Galileon force around a disk center hole
Peerreviewed
Hiromu Ogawa, Takashi Hiramatsu, Tsutomu Kobayashi
14 2 2018

Yjunction intercommutations of current carrying strings
Peerreviewed
D. A. Steer, Marc Lilley, Daisuke Yamauchi, Takashi Hiramatsu
Physical Review D97
(
2
)
10 1 2018

CMB bispectra induced by lensing
Takashi Hiramatsu, Daisuke Yamauchi
Proceedings of the 28th Workshop on General Relativity and Gravitation in Japan, JGRG 20183
108

118
2018

Space Gravitational Wave Antenna DECIGO and BDECIGO
Kawamura, Seiji, Nakamura, Takashi, Ando, Masaki, Seto, Naoki, Akutsu, Tomotada, Funaki, Ikkoh, Ioka, Kunihito, K, a, Nobuyuki, Kawano, Isao, Musha, Mitsuru, Nakazawa, Kazuhiro, Sato, Shuichi, Takashima, Takeshi, Tanaka, Takahiro, Tsubono, Kimio, Yokoyama, Jun'ichi, Agatsuma, Kazuhiro, Aoyanagi, Kohsuke, Arai, Koji, Araya, Akito, Aritomi, Naoki, Asada, Hideki, Aso, Yoichi, Chen, Dan, Chiba, Takeshi, Ebisuzaki, Toshikazu, Eguchi, Satoshi, Ejiri, Yumiko, Enoki, Motohiro, Eriguchi, Yoshiharu, Fujimoto, MasaKatsu, Fujita, Ryuichi, Fukushima, Mitsuhiro, Futamase, Toshifumi, Gondo, Rina, Harada, Tomohiro, Hashimoto, Tatsuaki, Hayama, Kazuhiro, Hikida, Wataru, Himemoto, Yoshiaki, Hirabayashi, Hisashi, Hiramatsu, Takashi, Hong, FengLei, Horisawa, Hideyuki, Hosokawa, Mizuhiko, Ichiki, Kiyotomo, Ikegami, Takeshi, Inoue, Kaiki T, Ishihara, Hideki, Ishikawa, Takehiko, Ishizaki, Hideharu, Ito, Hiroyuki, Itoh, Yousuke, Izumi, Kiwamu, Kanemura, Shinya, Kawashima, Nobuki, Kawazoe, Fumiko, Kishimoto, Naoko, Kiuchi, Kenta, Kobayashi, Shiho, Kohri, Kazunori, Koizumi, Hiroyuki, Kojima, Yasufumi, Kokeyama, Keiko, Kokuyama, Wataru, Kotake, Kei, Kozai, Yoshihide, Kunimori, Hiroo, Kuninaka, Hitoshi, Kuroda, Kazuaki, Kuroyanagi, Sachiko, Maeda, Keiichi, Matsuhara, Hideo, Matsumoto, Nobuyuki, Michimura, Yuta, Miyakawa, Osamu, Miyamoto, Umpei, Miyoki, Shinji, Morimoto, Mutsuko Y, Morisawa, Toshiyuki, Moriwaki, Shigenori, Mukohyama, Shinji, Nagano, Shigeo, Nakamura, Kouji, Nakano, Hiroyuki, Nakao, Kenichi, Nakasuka, Shinichi, Nakayama, Yoshinori, Nishida, Erina, Nishizawa, Atsushi, Niwa, Yoshito, Noumi, Taiga, Obuchi, Yoshiyuki, Ohishi, Naoko, Ohkawa, Masashi, Okada, Kenshi, Okada, Norio, Okutomi, Koki, Oohara, Kenichi, Sago, Norichika, Saijo, Motoyuki, Saito, Ryo, Sakagami, Masaaki, Sakai, Shinichiro, Sakata, Shihori, Sasaki, Misao, Sato, Takashi, Shibata, Masaru, Shibata, Kazunori, Shimooku, Ayumi, Shinkai, Hisaaki, Shoda, Ayaka, Somiya, Kentaro, Sotani, Hajime, Suemasa, Aru, Sugiyama, Naoshi, Suwa, Yudai, Suzuki, Rieko, Tagoshi, Hideyuki, Takahashi, Fuminobu, Takahashi, Kakeru, Takahashi, Keitaro, Takahashi, Ryutaro, Takahashi, Ryuichi, Takahashi, Hirotaka, Akiteru, Takamori, Takano, Tadashi, Tanaka, Nobuyuki, Taniguchi, Keisuke, Taruya, Atsushi, Tashiro, Hiroyuki, Torii, Yasuo, Toyoshima, Morio, Tsujikawa, Shinji, Ueda, Akitoshi, Ueda, Kenichi, Ushiba, Takafumi, Utashima, Masayoshi, Wakabayashi, Yaka, Yagi, Kent, Yamamoto, Kazuhiro, Yamazaki, Toshitaka, Yoo, ChulMoon, Yoshida, Shijun, Yoshino, Taizoh
International Journal of Modern Physics D0
(
ja
)
2018

The status of DECIGO
Peerreviewed
Shuichi Sato, Seiji Kawamura, Masaki Ando, Takashi Nakamura, Kimio Tsubono, Akito Araya, Ikkoh Funaki, Kunihito Ioka, Nobuyuki Kanda, Shigenori Moriwaki, Mitsuru Musha, Kazuhiro Nakazawa, Kenji Numata, Shin Ichiro Sakai, Naoki Seto, Takeshi Takashima, Takahiro Tanaka, Kazuhiro Agatsuma, Koh Suke Aoyanagi, Koji Arai, Hideki Asada, Yoichi Aso, Takeshi Chiba, Toshikazu Ebisuzaki, Yumiko Ejiri, Motohiro Enoki, Yoshiharu Eriguchi, Masa Katsu Fujimoto, Ryuichi Fujita, Mitsuhiro Fukushima, Toshifumi Futamase, Katsuhiko Ganzu, Tomohiro Harada, Tatsuaki Hashimoto, Kazuhiro Hayama, Wataru Hikida, Yoshiaki Himemoto, Hisashi Hirabayashi, Takashi Hiramatsu, Feng Lei Hong, Hideyuki Horisawa, Mizuhiko Hosokawa, Kiyotomo Ichiki, Takeshi Ikegami, Kaiki T. Inoue, Koji Ishidoshiro, Hideki Ishihara, Takehiko Ishikawa, Hideharu Ishizaki, Hiroyuki Ito, Yousuke Itoh, Nobuki Kawashima, Fumiko Kawazoe, Naoko Kishimoto, Kenta Kiuchi, Shiho Kobayashi, Kazunori Kohri, Hiroyuki Koizumi, Yasufumi Kojima, Keiko Kokeyama, Wataru Kokuyama, Kei Kotake, Yoshihide Kozai, Hideaki Kudoh, Hiroo Kunimori, Hitoshi Kuninaka, Kazuaki Kuroda, Kei Ichi Maeda, Hideo Matsuhara, Yasushi Mino, Osamu Miyakawa, Shinji Miyoki, Mutsuko Y. Morimoto, Tomoko Morioka, Toshiyuki Morisawa, Shinji Mukohyama, Shigeo Nagano, Isao Naito, Kouji Nakamura, Hiroyuki Nakano, Kenichi Nakao, Shinichi Nakasuka, Yoshinori Nakayama, Erina Nishida, Kazutaka Nishiyama, Atsushi Nishizawa, Yoshito Niwa, Taiga Noumi, Yoshiyuki Obuchi, Masatake Ohashi, Naoko Ohishi, Masashi Ohkawa, Norio Okada, Kouji Onozato, Kenichi Oohara, Norichika Sago, Motoyuki Saijo, Masaaki Sakagami, Shihori Sakata, Misao Sasaki
Journal of Physics: Conference Series840
(
1
)
1 6 2017

CMB scale dependent nonGaussianity from massive gravity during inflation
Peerreviewed
Domenech, Guillem, Hiramatsu, Takashi, Lin, Chunshan, Sasaki, Misao, Shiraishi, Maresuke, Wang, Yi
Journal of Cosmology and Astroparticle Physics
2017

Reconstruction of primordial tensor power spectrum from Bmode observations
Takashi Hiramatsu, Eiichiro Komatsu, Masashi Hazumi, Misao Sasaki
Proceedings of the 27th Workshop on General Relativity and Gravitation in Japan, JGRG 20172
77

86
2017

An update on the Axion Helioscopes front: Current activities at CAST and the IAXO project
Peerreviewed
T. Dafni, M. Arik, E. Armengaud, S. Aune, F. T. Avignone, K. Barth, A. Belov, M. Betz, H. Bräuninger, P. Brax, N. Breijnholt, P. Brun, G. Cantatore, J. M. Carmona, G. P. Carosi, F. Caspers, S. Caspi, S. A. Cetin, D. Chelouche, F. E. Christensen, J. I. Collar, A. Dael, M. Davenport, A. V. Derbin, K. Desch, A. Diago, B. Döbrich, I. Dratchnev, A. Dudarev, C. Eleftheriadis, G. Fanourakis, E. FerrerRibas, P. Friedrich, J. Galán, J. A. García, A. Gardikiotis, J. G. Garza, E. N. Gazis, E. Georgiopoulou, T. Geralis, B. Gimeno, I. Giomataris, S. Gninenko, H. Gómez, D. GonzálezDíaz, E. Gruber, E. Guendelman, T. Guthörl, C. J. Hailey, R. Hartmann, S. Hauf, F. Haug, M. D. Hasinoff, T. Hiramatsu, D. H.H. Hoffmann, D. Horns, F. J. Iguaz, I. G. Irastorza, J. Isern, K. Imai, J. Jacoby, J. Jaeckel, A. C. Jakobsen, K. Jakovcić, J. Kaminski, M. Kawasaki, M. Karuza, K. Königsmann, R. Kotthaus, M. Krcmar, K. Kousouris, C. Krieger, M. Kuster, B. Lakić, J. M. Laurent, O. Limousin, A. Lindner, A. Liolios, A. Ljubicić, G. Luzón, S. Matsuki, V. N. Muratova, S. Neff, T. Niinikoski, C. Nones, I. Ortega, T. Papaevangelou, M. J. Pivovaroff, G. Raffelt, J. Redondo, H. Riege, A. Ringwald, A. Rodríguez, M. Rosu, S. Russenschuck, J. Ruz, K. Saikawa, I. Savvidis, T. Sekiguchi, Y. K. Semertzidis, I. Shilon, P. Sikivie, H. Silva, S. K. Solanki, L. Stewart, H. H.J. ten Kate, A. Tomas, S. Troitsky, T. Vafeiadis, K. van Bibber, P. Vedrine, J. A. Villar, J. K. Vogel, L. Walckiers, A. Weltman, W. Wester, S. C. Yildiz, K. Zioutas
Nuclear and Particle Physics Proceedings273275
244

249
1 4 2016

Reheating signature in the gravitational wave spectrum from selfordering scalar fields
Peerreviewed
Sachiko Kuroyanagi, Takashi Hiramatsu, Jun'ichi Yokoyama
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(
2
)
2 2016

The IAXO Helioscope
Peerreviewed
E Ferrer Ribas, E. Armengaud, F. T. Avignone, M. Betz, P. Brax, P. Brun, G. Cantatore, J. M. Carmona, G. P. Carosi, F. Caspers, S. Caspi, S. A. Cetin, D. Chelouche, F. E. Christensen, A. Dael, T. Dafni, M. Davenport, A. V. Derbin, K. Desch, A. Diago, B. Döbrich, I. Dratchnev, A. Dudarev, C. Eleftheriadis, G. Fanourakis, J. Galán, J. A. García, J. G. Garza, T. Geralis, B. Gimeno, I. Giomataris, S. Gninenko, H. Gómez, D. GonzálezDiaz, E. Guendelman, C. J. Hailey, T. Hiramatsu, D. H.H. Hoffmann, D. Horns, F. J. Iguaz, I. G. Irastorza, J. Isern, K. Imai, J. Jaeckel, A. C. Jakobsen, K. Jakovčić, J. Kaminski, M. Kawasaki, M. Karuza, M. Krčmar, K. Kousouris, C. Krieger, B. Lakić, O. Limousin, A. Lindner, A. Liolios, G. Luzón, S. Matsuki, V. N. Muratova, C. Nones, I. Ortega, T. Papaevangelou, M. J. Pivovaroff, G. Raffelt, J. Redondo, A. Ringwald, S. Russenschuck, J. Ruz, K. Saikawa, I. Savvidis, T. Sekiguchi, Y. K. Semertzidis, I. Shilon, P. Sikivie, H. Silva, H. H.J. Ten Kate, A. Tomas, S. Troitsky, T. Vafeiadis, K. Van Bibber, P. Vedrine, J. A. Villar, J. K. Vogel, L. Walckiers, A. Weltman, W. Wester, S. C. Yildiz, K. Zioutas
Journal of Physics: Conference Series650
(
1
)
16 11 2015

Effects of thermal fluctuations on thermal inflation
Peerreviewed
Takashi Hiramatsu, Yuhei Miyamoto, Jun'ichi Yokoyama
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(
3
)
3 2015

The next generation of axion helioscopes: The International Axion Observatory (IAXO)
Peerreviewed
J. K. Vogel, E. Armengaud, F. T. Avignone, M. Betz, P. Brax, P. Brun, G. Cantatore, J. M. Carmona, G. P. Carosi, F. Caspers, S. Caspi, S. A. Cetin, D. Chelouche, F. E. Christensen, A. Dael, T. Dafni, M. Davenport, A. V. Derbin, K. Desch, A. Diago, B. Doebrich, I. Dratchnev, A. Dudarev, C. Eleftheriadis, G. Fanourakis, E. FerrerRibas, J. Galan, J. A. Garcia, J. G. Garza, T. Geralis, B. Gimeno, I. Giomataris, S. Gninenko, H. Gomez, D. GonzalezDiaz, E. Guendelman, C. J. Hailey, T. Hiramatsu, D. H. H. Hoffmann, D. Horns, F. J. Iguaz, I. G. Irastorza, J. Isern, K. Imai, A. C. Jakobsen, J. Jaeckel, K. Jakovcic, J. Kaminski, M. Kawasaki, M. Karuza, M. Krcmar, K. Kousouris, C. Krieger, B. Lakic, O. Limousin, A. Lindner, A. Liolios, G. Luzon, S. Matsuki, V. N. Muratova, C. Nones, I. Ortega, T. Papaevangelou, M. J. Pivovaroff, G. Raffelt, J. Redondo, A. Ringwald, S. Russenschuck, J. Ruz, K. Saikawa, I. Savvidis, T. Sekiguchi, Y. K. Semertzidis, I. Shilon, P. Sikivie, H. Silva, H. ten Kate, A. Tomas, S. Troitsky, T. Vafeiadis, K. van Bibber, P. Vedrine, J. A. Villar, L. Walckiers, A. Weltman, W. Wester, S. C. Yildiz, K. Zioutas
13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 201361
193

200
2015

Regularized cosmological power spectrum and correlation function in modified gravity models
Peerreviewed
Atsushi Taruya, Takahiro Nishimichi, Francis Bernardeau, Takashi Hiramatsu, Kazuya Koyama
PHYSICAL REVIEW D90
(
12
)
12 2014

Geodesic curveofsight formulae for the cosmic microwave background: a unified treatment of redshift, time delay, and lensing
Peerreviewed
Ryo Saito, Atsushi Naruko, Takashi Hiramatsu, Misao Sasaki
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(
10
)
10 2014

Conceptual design of the International Axion Observatory (IAXO)
Peerreviewed
E. Armengaud, F. T. Avignone, M. Betz, P. Brax, P. Brun, G. Cantatore, J. M. Carmona, G. P. Carosi, F. Caspers, S. Caspi, S. A. Cetin, D. Chelouche, F. E. Christensen, A. Dael, T. Dafni, M. Davenport, A. V. Derbin, K. Desch, A. Diago, B. Doebrich, I. Dratchnev, A. Dudarev, C. Eleftheriadis, G. Fanourakis, E. FerrerRibas, J. Galan, J. A. Garcia, J. G. Garza, T. Geralis, B. Gimeno, I. Giomataris, S. Gninenko, H. Gomez, D. GonzalezDiaz, E. Guendelman, C. J. Hailey, T. Hiramatsu, D. H. H. Hoffmann, D. Horns, F. J. Iguaz, I. G. Irastorza, J. Isern, K. Imai, A. C. Jakobsen, J. Jaeckel, K. Jakovcic, J. Kaminski, M. Kawasaki, M. Karuza, M. Krcmar, K. Kousouris, C. Krieger, B. Lakic, O. Limousin, A. Lindner, A. Liolios, G. Luzon, S. Matsuki, V. N. Muratova, C. Nones, I. Ortega, T. Papaevangelou, M. J. Pivovaroff, G. Raffelt, J. Redondo, A. Ringwald, S. Russenschuck, J. Ruz, K. Saikawa, I. Savvidis, T. Sekiguchi, Y. K. Semertzidis, I. Shilon, P. Sikivie, H. Silva, H. ten Kate, A. Tomas, S. Troitsky, T. Vafeiadis, K. van Bibber, P. Vedrine, J. A. Villar, J. K. Vogel, L. Walckiers, A. Weltman, W. Wester, S. C. Yildiz, K. Zioutas
JOURNAL OF INSTRUMENTATION9
5 2014

On the estimation of gravitational wave spectrum from cosmic domain walls
Peerreviewed
Takashi Hiramatsu, Masahiro Kawasaki, Ken'ichi Saikawa
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(
2
)
2 2014

Beyond consistency test of gravity with redshiftspace distortions at quasilinear scales
Peerreviewed
Atsushi Taruya, Kazuya Koyama, Takashi Hiramatsu, Akira Oka
PHYSICAL REVIEW D89
(
4
)
2 2014

Instability of colliding metastable strings
Peerreviewed
Takashi Hiramatsu, Minoru Eto, Kohei Kamada, Tatsuo Kobayashi, Yutaka Ookouchi
JOURNAL OF HIGH ENERGY PHYSICS
(
1
)
1 2014

Progress of code development: 2ndorder EinsteinBoltzmann solver for CMB anisotropy
Takashi Hiramatsu, Ryo Saito, Atsushi Naruko, Misao Sasaki
JGRG 2014  Proceedings of the 24th Workshop on General Relativity and Gravitation in Japan5
861

870
2014

Production and Evolution of Dark Matter Axions in the Early Universe
Ken’ichi Saikawa, Takashi Hiramatsu, Masahiro Kawasaki, Toshifumi Noumi, Ryosuke Sato, Toyokazu Sekiguchi, Masahide Yamaguchi
Proceedings in 10th Patras workshop on Axions, WIMPs and WISPs (axionwimp2014)
2014

TypeI cosmicstring network
Peerreviewed
Takashi Hiramatsu, Yuuiti Sendouda, Keitaro Takahashi, Daisuke Yamauchi, ChulMoon Yoo
PHYSICAL REVIEW D88
(
8
)
10 2013

Equivalence principle violation in Vainshtein screened twobody systems
Peerreviewed
Takashi Hiramatsu, Wayne Hu, Kazuya Koyama, Fabian Schmidt
Physical Review D  Particles, Fields, Gravitation and Cosmology87
(
6
)
26 3 2013

Equivalence principle violation in Vainshtein screened twobody systems
Peerreviewed
Takashi Hiramatsu, Wayne Hu, Kazuya Koyama, Fabian Schmidt
PHYSICAL REVIEW D87
(
6
)
3 2013

Axion cosmology with longlived domain walls
Peerreviewed
Takashi Hiramatsu, Masahiro Kawasaki, Ken'ichi Saikawa, Toyokazu Sekiguchi
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(
1
)
1 2013

Bound states of extreme TypeI cosmic strings in twodimensional space
Takashi Hiramatsu, Daisuke Yamauchi
JGRG 2013  Proceedings of the 23rd Workshop on General Relativity and Gravitation in Japan4
806

814
2013

“Cosmological UpperBound for f(R) gravity through redshiftspace distortion”
O. K.A. Akira, Atsushi Taruya, Takashi Hiramatsu, Kazuya Koyama, Kazuhiro Yamamoto, Takahiro Nishimichi
JGRG 2013  Proceedings of the 23rd Workshop on General Relativity and Gravitation in Japan2
427

437
2013

Future axion searches with the International Axion Observatory (IAXO)
Peerreviewed
I. G. Irastorza, F. T. Avignone, G. Cantatore, J. M. Carmona, S. Caspi, S. A. Cetin, F. E. Christensen, A. Dael, T. Dafni, M. Davenport, A. V. Derbin, K. Desch, A. Diago, B. Doebrich, A. Dudarev, C. Eleftheriadis, G. Fanourakis, E. FerrerRibas, J. Galan, J. A. Garcia, J. G. Garza, T. Geralis, B. Gimeno, I. Giomataris, S. Gninenko, H. Gomez, E. Guendelman, C. J. Hailey, T. Hiramatsu, D. H. H. Hoffmann, D. Horns, F. J. Iguaz, J. Isern, A. C. Jakobsen, J. Jaeckel, K. Jakovcic, J. Kaminski, M. Kawasaki, M. Krcmar, C. Krieger, B. Lakic, A. Lindner, A. Liolios, G. Luzon, I. Ortega, T. Papaevangelou, M. J. Pivovaroff, G. Raffelt, J. Redondo, A. Ringwald, S. Russenschuck, J. Ruz, K. Saikawa, I. Savvidis, T. Sekiguchi, I. Shilon, P. Sikivie, H. Silva, H. ten Kate, A. Tomas, S. Troitsky, T. Vafeiadis, K. van Bibber, P. Vedrine, J. A. Villar, J. K. Vogel, L. Walckiers, W. Wester, S. C. Yildiz, K. Zioutas
SIXTH SYMPOSIUM ON LARGE TPCS FOR LOW ENERGY RARE EVENT DETECTION460
2013

Production of dark matter axions from collapse of stringwall systems (vol 85, 105020, 2012)
Peerreviewed
Takashi Hiramatsu, Masahiro Kawasaki, Ken'ichi Saikawa, Toyokazu Sekiguchi
PHYSICAL REVIEW D86
(
8
)
10 2012

Production of dark matter axions from collapse of stringwall systems
Peerreviewed
Takashi Hiramatsu, Masahiro Kawasaki, Ken'ichi Saikawa, Toyokazu Sekiguchi
PHYSICAL REVIEW D85
(
10
)
5 2012

Evolution of stringwall networks and axionic domain wall problem
Peerreviewed
Takashi Hiramatsu, Masahiro Kawasaki, Ken'ichi Saikawa
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(
8
)
8 2011

Improved estimation of radiated axions from cosmological axionic strings
Peerreviewed
Takashi Hiramatsu, Masahiro Kawasaki, Toyokazu Sekiguchi, Masahide Yamaguchi, Jun'ichi Yokoyama
PHYSICAL REVIEW D83
(
12
)
6 2011

The Japanese space gravitational wave antenna: DECIGO
Peerreviewed
Seiji Kawamura, Masaki Ando, Naoki Seto, Shuichi Sato, Takashi Nakamura, Kimio Tsubono, Nobuyuki Kanda, Takahiro Tanaka, Jun'ichi Yokoyama, Ikkoh Funaki, Kenji Numata, Kunihito Ioka, Takeshi Takashima, Kazuhiro Agatsuma, Tomotada Akutsu, Kohsuke Aoyanagi, Koji Arai, Akito Araya, Hideki Asada, Yoichi Aso, Dan Chen, Takeshi Chiba, Toshikazu Ebisuzaki, Yumiko Ejiri, Motohiro Enoki, Yoshiharu Eriguchi, MasaKatsu Fujimoto, Ryuichi Fujita, Mitsuhiro Fukushima, Toshifumi Futamase, Tomohiro Harada, Tatsuaki Hashimoto, Kazuhiro Hayama, Wataru Hikida, Yoshiaki Himemoto, Hisashi Hirabayashi, Takashi Hiramatsu, FengLei Hong, Hideyuki Horisawa, Mizuhiko Hosokawa, Kiyotomo Ichiki, Takeshi Ikegami, Kaiki T. Inoue, Koji Ishidoshiro, Hideki Ishihara, Takehiko Ishikawa, Hideharu Ishizaki, Hiroyuki Ito, Yousuke Itoh, Kiwamu Izumi, Isao Kawano, Nobuki Kawashima, Fumiko Kawazoe, Naoko Kishimoto, Kenta Kiuchi, Shiho Kobayashi, Kazunori Kohri, Hiroyuki Koizumi, Yasufumi Kojima, Keiko Kokeyama, Wataru Kokuyama, Kei Kotake, Yoshihide Kozai, Hiroo Kunimori, Hitoshi Kuninaka, Kazuaki Kuroda, Sachiko Kuroyanagi, Keiichi Maeda, Hideo Matsuhara, Nobuyuki Matsumoto, Yuta Michimura, Osamu Miyakawa, Umpei Miyamoto, Shinji Miyoki, Mutsuko Y. Morimoto, Toshiyuki Morisawa, Shigenori Moriwaki, Shinji Mukohyama, Mitsuru Musha, Shigeo Nagano, Isao Naito, Kouji Nakamura, Hiroyuki Nakano, Kenichi Nakao, Shinichi Nakasuka, Yoshinori Nakayama, Kazuhiro Nakazawa, Erina Nishida, Kazutaka Nishiyama, Atsushi Nishizawa, Yoshito Niwa, Taiga Noumi, Yoshiyuki Obuchi, Masatake Ohashi, Naoko Ohishi, Masashi Ohkawa, Kenshi Okada, Norio Okada, Kenichi Oohara, Norichika Sago, Motoyuki Saijo, Ryo Saito, Masaaki Sakagami, Shinichiro Sakai, Shihori Sakata, Misao Sasaki, Takashi Sato, Masaru Shibata, Hisaaki Shinkai, Ayaka Shoda, Kentaro Somiya, Hajime Sotani, Naoshi Sugiyama, Yudai Suwa, Rieko Suzuki, Hideyuki Tagoshi, Fuminobu Takahashi, Kakeru Takahashi, Keitaro Takahashi, Ryutaro Takahashi, Ryuichi Takahashi, Tadayuki Takahashi, Hirotaka Takahashi, Takamori Akiteru, Tadashi Takano, Nobuyuki Tanaka, Keisuke Taniguchi, Atsushi Taruya, Hiroyuki Tashiro, Yasuo Torii, Morio Toyoshima, Shinji Tsujikawa, Yoshiki Tsunesada, Akitoshi Ueda, Kenichi Ueda, Masayoshi Utashima, Yaka Wakabayashi, Kent Yagi, Hiroshi Yamakawa, Kazuhiro Yamamoto, Toshitaka Yamazaki, ChulMoon Yoo, Shijun Yoshida, Taizoh Yoshino, KeXun Sun
CLASSICAL AND QUANTUM GRAVITY28
(
9
)
5 2011

Numerical Study of QBall Formation in Gravity Mediation
Peerreviewed
Takashi Hiramatsu, Masahiro Kawasaki, Fuminobu Takahashi
PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT
(
190
)
229

238
2011

Energy spectrum estimation of axion radiation from topological defects
Toyokakzu Sekiguchi, Takashi Hiramatsu, Masahiro Kawasaki, Kenichi Saikawa, Masahide Yamaguchi, Junichi Yokoyama
Proceedings of the 10th International conference on Gravitation, Astrophysics and Cosmology, ICGAC 2011
205

206
2011

Numerical study of Qball formation in gravity mediation
Peerreviewed
Takashi Hiramatsu, Masahiro Kawasaki, Fuminobu Takahashi
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(
6
)
6 2010

Gravitational waves from collapsing domain walls
Peerreviewed
Takashi Hiramatsu, Masahiro Kawasaki, Ken'ichi Saikawa
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(
5
)
5 2010

DECIGO and DECIGO pathfinder
Peerreviewed
Masaki Ando, Seiji Kawamura, Naoki Seto, Shuichi Sato, Takashi Nakamura, Kimio Tsubono, Takeshi Takashima, Ikkoh Funaki, Kenji Numata, Nobuyuki Kanda, Takahiro Tanaka, Kunihito Ioka, Kazuhiro Agatsuma, Kohsuke Aoyanagi, Koji Arai, Akito Araya, Hideki Asada, Yoichi Aso, Takeshi Chiba, Toshikazu Ebisuzaki, Yumiko Ejiri, Motohiro Enoki, Yoshiharu Eriguchi, MasaKatsu Fujimoto, Ryuichi Fujita, Mitsuhiro Fukushima, Toshifumi Futamase, Tomohiro Harada, Tatsuaki Hashimoto, Kazuhiro Hayama, Wataru Hikida, Yoshiaki Himemoto, Hisashi Hirabayashi, Takashi Hiramatsu, FengLei Hong, Hideyuki Horisawa, Mizuhiko Hosokawa, Kiyotomo Ichiki, Takeshi Ikegami, Kaiki T. Inoue, Koji Ishidoshiro, Hideki Ishihara, Takehiko Ishikawa, Hideharu Ishizaki, Hiroyuki Ito, Yousuke Itoh, Kiwamu Izumi, Isao Kawano, Nobuki Kawashima, Fumiko Kawazoe, Naoko Kishimoto, Kenta Kiuchi, Shiho Kobayashi, Kazunori Kohri, Hiroyuki Koizumi, Yasufumi Kojima, Keiko Kokeyama, Wataru Kokuyama, Kei Kotake, Yoshihide Kozai, Hiroo Kunimori, Hitoshi Kuninaka, Kazuaki Kuroda, Keiichi Maeda, Hideo Matsuhara, Yasushi Mino, Osamu Miyakawa, Umpei Miyamoto, Shinji Miyoki, Mutsuko Y. Morimoto, Toshiyuki Morisawa, Shigenori Moriwaki, Shinji Mukohyama, Mitsuru Musha, Shigeo Nagano, Isao Naito, Kouji Nakamura, Masahiro Nakamura, Hiroyuki Nakano, Kenichi Nakao, Shinichi Nakasuka, Yoshinori Nakayama, Kazuhiro Nakazawa, Erina Nishida, Kazutaka Nishiyama, Atsushi Nishizawa, Yoshito Niwa, Taiga Noumi, Yoshiyuki Obuchi, Masatake Ohashi, Naoko Ohishi, Masashi Ohkawa, Kenshi Okada, Norio Okada, Kenichi Oohara, Norichika Sago, Motoyuki Saijo, Ryo Saito, Masaaki Sakagami, Shinichiro Sakai, Shihori Sakata, Misao Sasaki, Takashi Sato, Masaru Shibata, Hisaaki Shinkai, Kentaro Somiya, Hajime Sotani, Naoshi Sugiyama, Yudai Suwa, Rieko Suzuki, Hideyuki Tagoshi, Fuminobu Takahashi, Kakeru Takahashi, Keitaro Takahashi, Ryutaro Takahashi, Ryuichi Takahashi, Tadayuki Takahashi, Hirotaka Takahashi, Takamori Akiteru, Tadashi Takano, Keisuke Taniguchi, Atsushi Taruya, Hiroyuki Tashiro, Yasuo Torii, Morio Toyoshima, Shinji Tsujikawa, Yoshiki Tsunesada, Akitoshi Ueda, Kenichi Ueda, Masayoshi Utashima, Yaka Wakabayashi, Kent Yagi, Hiroshi Yamakawa, Kazuhiro Yamamoto, Toshitaka Yamazaki, Jun'ichi Yokoyama, ChulMoon Yoo, Shijun Yoshida, Taizoh Yoshino, KenXun Sun
CLASSICAL AND QUANTUM GRAVITY27
(
8
)
4 2010

Nonlinear evolution of baryon acoustic oscillations from improved perturbation theory in real and redshift spaces
Peerreviewed
Atsushi Taruya, Takahiro Nishimichi, Shun Saito, Takashi Hiramatsu
PHYSICAL REVIEW D80
(
12
)
12 2009

Nonlinear evolution of the matter power spectrum in modified theories of gravity
Peerreviewed
Kazuya Koyama, Atsushi Taruya, Takashi Hiramatsu
Physical Review D  Particles, Fields, Gravitation and Cosmology79
(
12
)
18 6 2009

Nonlinear evolution of the matter power spectrum in modified theories of gravity
Peerreviewed
Kazuya Koyama, Atsushi Taruya, Takashi Hiramatsu
PHYSICAL REVIEW D79
(
12
)
6 2009

Chasing the nonlinear evolution of matter power spectrum with a numerical resummation method: Solution of closure equations
Peerreviewed
Takashi Hiramatsu, Atsushi Taruya
PHYSICAL REVIEW D79
(
10
)
5 2009

Chasing the nonlinear evolution of matter power spectrum with a numerical resummation method: Solution of closure equations
Peerreviewed
Takashi Hiramatsu, Atsushi Taruya
Physical Review D  Particles, Fields, Gravitation and Cosmology79
(
10
)
1 5 2009

DECIGO pathfinder
Peerreviewed
Masaki Ando, Seiji Kawamura, Shuichi Sato, Takashi Nakamura, Kimio Tsubono, Akito Araya, Ikkoh Funaki, Kunihito Ioka, Nobuyuki Kanda, Shigenori Moriwaki, Mitsuru Musha, Kazuhiro Nakazawa, Kenji Numata, Shinichiro Sakai, Naoki Seto, Takeshi Takashima, Takahiro Tanaka, Kazuhiro Agatsuma, Kohsuke Aoyanagi, Koji Arai, Hideki Asada, Yoichi Aso, Takeshi Chiba, Toshikazu Ebisuzaki, Yumiko Ejiri, Motohiro Enoki, Yoshiharu Eriguchi, MasaKatsu Fujimoto, Ryuichi Fujita, Mitsuhiro Fukushima, Toshifumi Futamase, Katsuhiko Ganzu, Tomohiro Harada, Tatsuaki Hashimoto, Kazuhiro Hayama, Wataru Hikida, Yoshiaki Himemoto, Hisashi Hirabayashi, Takashi Hiramatsu, FengLei Hong, Hideyuki Horisawa, Mizuhiko Hosokawa, Kiyotomo Ichiki, Takeshi Ikegami, Kaiki T. Inoue, Koji Ishidoshiro, Hideki Ishihara, Takehiko Ishikawa, Hideharu Ishizaki, Hiroyuki Ito, Yousuke Itoh, Nobuki Kawashima, Fumiko Kawazoe, Naoko Kishimoto, Kenta Kiuchi, Shiho Kobayashi, Kazunori Kohri, Hiroyuki Koizumi, Yasufumi Kojima, Keiko Kokeyama, Wataru Kokuyama, Kei Kotake, Yoshihide Kozai, Hideaki Kudoh, Hiroo Kunimori, Hitoshi Kuninaka, Kazuaki Kuroda, Keiichi Maeda, Hideo Matsuhara, Yasushi Mino, Osamu Miyakawa, Shinji Miyoki, Mutsuko Y. Morimoto, Tomoko Morioka, Toshiyuki Morisawa, Shinji Mukohyama, Shigeo Nagano, Isao Naito, Kouji Nakamura, Hiroyuki Nakano, Kenichi Nakao, Shinichi Nakasuka, Yoshinori Nakayama, Erina Nishida, Kazutaka Nishiyama, Atsushi Nishizawa, Yoshito Niwa, Taiga Noumi, Yoshiyuki Obuchi, Masatake Ohashi, Naoko Ohishi, Masashi Ohkawa, Norio Okada, Kouji Onozato, Kenichi Oohara, Norichika Sago, Motoyuki Saijo, Masaaki Sakagami, Shihori Sakata, Misao Sasaki, Takashi Sato, Masaru Shibata, Hisaaki Shinkai, Kentaro Somiya, Hajime Sotani, Naoshi Sugiyama, Yudai Suwa, Rieko Suzuki, Hideyuki Tagoshi, Fuminobu Takahashi, Kakeru Takahashi, Keitaro Takahashi, Ryutaro Takahashi, Ryuichi Takahashi, Tadayuki Takahashi, Hirotaka Takahashi, Takamori Akiteru, Tadashi Takano, Keisuke Taniguchi, Atsushi Taruya, Hiroyuki Tashiro, Yasuo Torii, Morio Toyoshima, Shinji Tsujikawa, Yoshiki Tsunesada, Akitoshi Ueda, Kenichi Ueda, Masayoshi Utashima, Yaka Wakabayashi, Hiroshi Yamakawa, Kazuhiro Yamamoto, Toshitaka Yamazaki, Jun'ichi Yokoyama, ChulMoon Yoo, Shijun Yoshida, Taizoh Yoshino
CLASSICAL AND QUANTUM GRAVITY26
(
9
)
5 2009

A closure theory for nonlinear evolution of cosmological power spectra
Peerreviewed
Katsushi Taruya, Takashi Hiramatsu
Astrophysical Journal674
(
2
)
617

635
20 2 2008

Highenergy effects on the spectra of cosmological perturbations in braneworld cosmology
Peerreviewed
T. Hiramatsu, K. Koyama, A. Taruya
11th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation and Relativistic Field Theories  Proc. of the MG11 Meeting on General Relativity
2824

2826
2008

Scalar perturbations in braneworld cosmology
Peerreviewed
Antonio Cardoso, Takashi Hiramatsu, Kazuya Koyama, Sanjeev S. Seahra
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(
7
)
7 2007

Primordial perturbations from slowroll inflation on a brane
Peerreviewed
Kazuya Koyama, Andrew Mennim, V. A. Rubakov, David Wands, Takashi Hiramatsu
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(
4
)
4 2007

Detecting a stochastic background of gravitational waves in the presence of nonGaussian noise: A performance of generalized crosscorrelation statistic
Peerreviewed
Yoshiaki Himemoto, Atsushi Taruya, Hideaki Kudoh, Takashi Hiramatsu
PHYSICAL REVIEW D75
(
2
)
1 2007

Numerical study of curvature perturbations in a braneworld inflation at highenergies
Peerreviewed
Takashi Hiramatsu, Kazuya Koyama
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(
12
)
12 2006

Highenergy effects on the spectrum of the inflationary gravitational wave background in braneworld cosmology
Peerreviewed
T Hiramatsu
PHYSICAL REVIEW D73
(
8
)
4 2006

Detecting a gravitationalwave background with nextgeneration space interferometers
Peerreviewed
H Kudoh, A Taruya, T Hiramatsu, Y Himemoto
PHYSICAL REVIEW D73
(
6
)
3 2006

Detecting a gravitationalwave background with nextgeneration space interferometers
Peerreviewed
Hideaki Kudoh, Atsushi Taruya, Takashi Hiramatsu, Yoshiaki Himemoto
Physical Review D  Particles, Fields, Gravitation and Cosmology73
(
6
)
2006

Detecting a stochastic background of gravitational waves in the presence of nonGaussian noise
Peerreviewed
Y. Himemoto, A. Taruya, H. Kudoh, T. Hiramatsu
LASER INTERFEROMETER SPACE ANTENNA873
471

+
2006

Gravitational wave background from neutrinodriven gammaray bursts
Peerreviewed
T Hiramatsu, K Kotake, H Kudoh, A Taruya
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY364
(
3
)
1063

1068
12 2005

Evolution of gravitational waves in the highenergy regime of braneworld cosmology
Peerreviewed
T Hiramatsu, K Koyama, A Taruya
PHYSICS LETTERS B609
(
12
)
133

142
3 2005

Evolution of gravitational waves from inflationary braneworld: numerical study of highenergy effects
Peerreviewed
T Hiramatsu, K Koyama, A Taruya
PHYSICS LETTERS B578
(
34
)
269

275
1 2004