Cosmology Group（Kase Lab.）

Papers

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• [55] Linear perturbations of dyonic black holes in the lowest-order U(1) gauge-invariant scalar-vector-tensor theories

  Kitaro Taniguchi, Shunta Nishimura, Naoki Tsukamoto, and Ryotaro Kase

  arXiv:2504.21279 [gr-qc]preprint

• [54] Scrutinizing black hole stability in cubic vector Galileon theories

  Antonio De Felice, Ryotaro Kase, and Shinji Tsujikawa

  JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 10(072) 2024年10月published

  arXiv:2409.15606 [gr-qc]preprint

• [53] Neutral particle collisions near Gibbons-Maeda-Garfinkle-Horowitz-Strominger black holes after shadow observations

  Naoki Tsukamoto and Ryotaro Kase

  PHYSICAL REVIEW D 110(104063) 1-14 2024年11月published

  arXiv:2409.04990 [gr-qc]preprint

• [52] Even-parity stability of hairy black holes in U(1) gauge-invariant scalar-vector-tensor theories

  Chao Zhang and Ryotaro Kase

  PHYSICAL REVIEW D 110(044047) 1-28 2024年8月published

  arXiv:2404.11910 [gr-qc]preprint

• [51] Constraints on the black-hole charges of M87* and Sagittarius A* by lensing rings

  Naoki Tsukamoto and Ryotaro Kase

  PHYSICAL REVIEW D 110(044065) 1-12 2024年8月published

  arXiv:2404.06414 [gr-qc]preprint

• [50] Hairy black holes in extended Einstein-Maxwell-scalar theories with magnetic charge and kinetic couplings

  Kitaro Taniguchi, Shinta Takagishi, and Ryotaro Kase

  PHYSICAL REVIEW D 110(044006) 1-12 2024年8月published

  arXiv:2403.17484 [gr-qc]preprint

• [49] Black hole perturbations in Maxwell-Horndeski theories

  Ryotaro Kase and Shinji Tsujikawa

  PHYSICAL REVIEW D 107(104045) 1-25 2023年5月published

  arXiv:2301.10362 [gr-qc]preprint

• [48] Cosmological gravity probes: Connecting recent theoretical developments to forthcoming observations

  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, and Junsei Tokuda

  Progress of Theoretical and Experimental Physics 2023(7) 1-105 2023年4月published

  arXiv:2212.09094 [astro-ph.CO]preprint

• [47] Vainshtein screening in Horndeski theories nonminimally and kinetically coupled to ordinary matter

  Kitaro Taniguchi and Ryotaro Kase

  PHYSICAL REVIEW D 105(104044) 1-10 2022年5月published

  arXiv:2203.08520 [gr-qc]preprint

• [46] Relativistic star perturbations in Horndeski theories with a gauge-ready formulation

  Ryotaro Kase and Shinji Tsujikawa

  PHYSICAL REVIEW D 105(024059) 1-29 2022年1月published

  arXiv:2110.12728 [gr-qc]preprint

• [45] Neutron star cooling in modified gravity theories

  Akira Dohi, Ryotaro Kase, Rampei Kimura, Kazuhiro Yamamoto, and Masa-aki Hashimoto

  Progress of Theoretical and Experimental Physics 2021(9) 1-32 2021年7月published

  arXiv:2003.12571 [gr-qc]preprint

• [44] Instability of compact stars with a nonminimal scalar-derivative coupling

  Ryotaro Kase and Shinji Tsujikawa

  JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 01(008) 1-23 2021年1月published

  arXiv:2008.13350 [gr-qc]preprint

• [43] General formulation of cosmological perturbations in scalar-tensor dark energy coupled to dark matter

  Ryotaro Kase and Shinji Tsujikawa

  JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 11(032) 1-34 2020年11月published

  arXiv:2005.13809 [gr-qc]preprint

• [42] Stability of relativistic stars with scalar hairs

  Ryotaro Kase, Rampei Kimura, Seiga Sato, and Shinji Tsujikawa

  PHYSICAL REVIEW D 102(084037) 1-23 2020年10月published

  arXiv:2007.09864 [gr-qc]preprint

• [41] Neutron stars with a generalized Proca hair and spontaneous vectorization

  Ryotaro Kase, Masato Minamitsuji, and Shinji Tsujikawa

  PHYSICAL REVIEW D 102(024067) 1-17 2020年7月published

  arXiv:2001.10701 [gr-qc]preprint

• [40] Weak cosmic growth in coupled dark energy with a Lagrangian formulation

  Ryotaro Kase and Shinji Tsujikawa

  PHYSICS LETTERS B 804(135400) 1-13 2020年3月published

  arXiv:1911.02179 [gr-qc]preprint

• [39] Scalar-field dark energy nonminimally and kinetically coupled to dark matter

  Ryotaro Kase and Shinji Tsujikawa

  PHYS REV D 101(063511) 1-22 2020年3月published

  arXiv:1910.02699 [gr-qc]preprint

• [38] Coupled vector dark energy

  Shintaro Nakamura, Ryotaro Kase, and Shinji Tsujikawa

  J COSMOL ASTROPART P 12(032) 1-25 2019年12月published

  arXiv:1907.12216 [gr-qc]preprint

• [37] Neutron stars in f(R) gravity and scalar-tensor theories

  Ryotaro Kase and Shinji Tsujikawa

  J COSMOL ASTROPART P 1909(054) 1-25 2019年9月published

  arXiv:1906.08954 [gr-qc]preprint

• [36] Anisotropic 2-form dark energy

  Juan P. Beltrán Almeida, Alejandro Guarnizo, Ryotaro Kase, Shinji Tsujikawa, and César A. Valenzuela-Toledo

  PHYS LETT B 793 396-404 2019年6月published

  arXiv:1902.05846 [hep-th]preprint

• [35] Constraints on massive vector dark energy models from integrated Sachs-Wolfe-galaxy cross-correlations

  Shintaro Nakamura, Antonio De Felice, Ryotaro Kase, and Shinji Tsujikawa

  PHYSICAL REVIEW D 99(063533) 1-18 2019年3月published

  arXiv:1811.07541 [astro-ph.CO]preprint

• [34] Anisotropic inflation with coupled p-forms

  Juan P. Beltrán Almeida, Alejandro Guarnizo, Ryotaro Kase, Shinji Tsujikawa, and César A. Valenzuela-Toledo

  JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 1903(025) 1-25 2019年3月published

  arXiv:1901.06097 [gr-qc]preprint

• [32] Tracker and scaling solutions in DHOST theories

  Noemi Frusciante, Ryotaro Kase, Kazuya Koyama, Shinji Tsujikawa, and Daniele Vernieri

  PHYSICS LETTERS B 790 167-175 2019年1月published

  arXiv:1812.05204 [gr-qc]preprint

• [31] Most general cubic-order Horndeski Lagrangian allowing for scaling solutions and the application to dark energy

  Noemi Frusciante, Ryotaro Kase, Nelson J. Nunes, and Shinji Tsujikawa

  PHYSICAL REVIEW D 98(123517) 1-17 2018年12月published

  arXiv:1810.07957 [gr-qc]preprint

• [30] Gauge-ready formulation of cosmological perturbations in scalar-vector-tensor theories

  Lavinia Heisenberg, Ryotaro Kase, and Shinji Tsujikawa

  PHYSICAL REVIEW D 98(123504) 1-25 2018年12月published

  arXiv:1807.07202 [gr-qc]preprint

• [29] Dark energy in scalar-vector-tensor theories

  Ryotaro Kase and Shinji Tsujikawa

  JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 1811(024) 1-24 2018年11月published

  arXiv:1805.11919 [gr-qc]preprint

• [28] Black holes in quartic-order beyond-generalized Proca theories

  Ryotaro Kase, Masato Minamitsuji, and Shinji Tsujikawa

  Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 782 541-550 2018年7月10日published

  arXiv:1803.06335 [gr-qc]preprint

• [27] Stable cosmological solutions in degenerate theory of gravity

  Ryotaro Kase, Rampei Kimura, Atsushi Naruko, and Daisuke Yoshida

  PHYSICS LETTERS B 783 320-325 2018年7月published

  arXiv:1803.10876 [gr-qc]preprint

• [26] Cosmology in scalar-vector-tensor theories

  Lavinia Heisenberg, Ryotaro Kase, and Shinji Tsujikawa

  PHYSICAL REVIEW D 98(024038) 1-15 2018年7月published

  arXiv:1805.01066 [gr-qc]preprint

• [25] Odd-parity stability of hairy black holes in U(1) gauge-invariant scalar-vector-tensor theories

  Lavinia Heisenberg, Ryotaro Kase, and Shinji Tsujikawa

  PHYSICAL REVIEW D 97(124043) 1-14 2018年6月published

  arXiv:1804.00535 [gr-qc]preprint

• [24] Dark energy scenario consistent with GW170817 in theories beyond Horndeski gravity

  Ryotaro Kase and Shinji Tsujikawa

  Physical Review D 97(10) 1-19 2018年5月15日published

  arXiv:1802.02728 [gr-qc]preprint

• [23] Relativistic stars in vector-tensor theories

  Ryotaro Kase, Masato Minamitsuji, and Shinji Tsujikawa

  Physical Review D 97(8) 1-17 2018年4月9日published

  arXiv:1711.08713 [gr-qc]preprint

• [22] Black hole perturbations in vector-tensor theories: the odd-mode analysis

  Ryotaro Kase, Masato Minamitsuji, Shinji Tsujikawa, and Ying-Li Zhang

  Journal of Cosmology and Astroparticle Physics 2018(2) 1-38 2018年2月23日published

  arXiv:1801.01787 [gr-qc]preprint

• [21] Suppression of matter couplings with a vector field in generalized Proca theories

  Shintaro Nakamura, Ryotaro Kase, and Shinji Tsujikawa

  PHYSICAL REVIEW D 96(8) 1-18 2017年10月published

  arXiv:1707.09194 [gr-qc]preprint

• [20] Hairy black-hole solutions in generalized Proca theories

  Lavinia Heisenberg, Ryotaro Kase, Masato Minamitsuji, and Shinji Tsujikawa

  PHYSICAL REVIEW D 96(8) 1-6 2017年10月published

  arXiv:1705.09662 [gr-qc]preprint

• [19] Black holes in vector-tensor theories

  Lavinia Heisenberg, Ryotaro Kase, Masato Minamitsuji, and Shinji Tsujikawa

  JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 1708(8) 1-37 2017年8月published

  arXiv:1706.05115 [gr-qc]preprint

• [18] Cosmology in beyond-generalized Proca theories

  Shintaro Nakamura, Ryotaro Kase, and Shinji Tsujikawa

  PHYSICAL REVIEW D 95(10) 1-22 2017年5月published

  arXiv:1702.08610 [gr-qc]preprint

• [17] Instabilities in Horndeski-Yang-Mills inflation

  Jose Beltran Jimenez, Lavinia Heisenberg, Ryotaro Kase, Ryo Namba, and Shinji Tsujikawa

  PHYSICAL REVIEW D 95(6) 1-8 2017年3月published

  arXiv:1702.01193 [hep-th]preprint

• [16] Absence of solid angle deficit singularities in beyond-generalized proca theories

  Lavinia Heisenberg, Ryotaro Kase, and Shinji Tsujikawa

  PHYSICAL REVIEW D 94(12) 1-14 2016年12月published

  arXiv:1608.08390 [gr-qc]preprint

• [15] Anisotropic cosmological solutions in massive vector theories

  Lavinia Heisenberg, Ryotaro Kase, Shinji Tsujikawa

  JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 1611(11) 1-28 2016年11月published

  arXiv:1607.03175 [gr-qc]preprint

• [14] Beyond generalized Proca theories

  Lavinia Heisenberg, Ryotaro Kase, and Shinji Tsujikawa

  PHYSICS LETTERS B 760 617-626 2016年9月published

  arXiv:1605.05565 [hep-th]preprint

• [13] Effective gravitational couplings for cosmological perturbations in generalized Proca theories

  Antonio De Felice, Lavinia Heisenberg, Ryotaro Kase, Shinji Mukohyama, Shinji Tsujikawa, and Ying-li Zhang

  PHYSICAL REVIEW D 94(4) 1-20 2016年8月published

  arXiv:1605.05066 [gr-qc]preprint

• [12] Cosmology in generalized Proca theories

  Antonio De Felice, Lavinia Heisenberg, Ryotaro Kase, Shinji Mukohyama, Shinji Tsujikawa, and Ying-li Zhang

  JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 1606(6) 1-33 2016年6月published

  arXiv:1603.05806 [gr-qc]preprint

• [11] Screening fifth forces in generalized Proca theories

  Antonio De Felice, Lavinia Heisenberg, Ryotaro Kase, Shinji Tsujikawa, Ying-li Zhang, and Gong-Bo Zhao

  PHYSICAL REVIEW D 93(10) 1-17 2016年5月published

  arXiv:1602.00371 [gr-qc]preprint

• [10] Conical singularities and the Vainshtein screening in full GLPV theories

  Ryotaro Kase, Shinji Tsujikawa, and Antonio De Felice

  JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 1603(3) 1-25 2016年3月published

  arXiv:1512.06497 [gr-qc]preprint

• [9] Cosmology with a successful Vainshtein screening in theories beyond Horndeski

  Ryotaro Kase, Shinji Tsujikawa, and Antonio De Felice

  PHYSICAL REVIEW D 93(2) 1-17 2016年1月published

  arXiv:1510.06853 [gr-qc]preprint

• [8] Existence and disappearance of conical singularities in Gleyzes-Langlois-Piazza-Vernizzi theories

  Antonio De Felice, Ryotaro Kase, and Shinji Tsujikawa

  PHYSICAL REVIEW D 92(12) 1-11 2015年12月published

  arXiv:1508.06364 [gr-qc]preprint

• [7] Vainshtein Mechanism With a Generalized Galileon Term

  Antonio De Felice, Ryotaro Kase, and Shinji Tsujikawa

  The 13th Marcel Grossmann Meeting: On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proceedings of the MG13 Meeting on General Relativity, 2012 (210699) 1304-1306 2015年published

• [6] Effective field theory of modified gravity on the spherically symmetric background: Leading order dynamics and the odd-type perturbations

  Ryotaro Kase, Laszlo A. Gergely, and Shinji Tsujikawa

  PHYSICAL REVIEW D 90(12) 1-21 2014年12月published

  arXiv:1406.2402 [hep-th]preprint

• [4] Cosmology in generalized Horndeski theories with second-order equations of motion

  Ryotaro Kase and Shinji Tsujikawa

  PHYSICAL REVIEW D 90(4) 1-15 2014年8月published

  arXiv:1407.0794 [hep-th]preprint

• [3] Screening the fifth force in the Horndeski's most general scalar-tensor theories

  Ryotaro Kase and Shinji Tsujikawa

  JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 1308(8) 1-36 2013年8月published

  arXiv:1306.6401 [gr-qc]preprint

• [2] Vainshtein mechanism in second-order scalar-tensor theories

  Antonio De Felice, Ryotaro Kase, and Shinji Tsujikawa

  PHYSICAL REVIEW D 85(4) 1-13 2012年2月published

  arXiv:1111.5090 [gr-qc]preprint

• [1] Matter perturbations in Galileon cosmology

  Antonio De Felice, Ryotaro Kase, and Shinji Tsujikawa

  PHYSICAL REVIEW D 83(4) 1-15 2011年2月published

  arXiv:1011.6132 [astro-ph.CO]preprint

Reviews

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• [33] Dark energy in Horndeski theories after GW170817: A review

  Ryotaro Kase, and Shinji Tsujikawa

  INTERNATIONAL JOURNAL OF MODERN PHYSICS D 28(1942005) 1-78 2019年2月published

  arXiv:1809.08735 [gr-qc]preprint

• [5] Effective field theory approach to modified gravity including Horndeski theory and Hořava-Lifshitz gravity

  Ryotaro Kase and Shinji Tsujikawa

  INTERNATIONAL JOURNAL OF MODERN PHYSICS D 23(13) 1-41 2014年11月published

  arXiv:1409.1984 [hep-th]preprint

Grants-in-Aid

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