Publication in Refereed Journal

 

1. Masahiro Shimano and Tomohiro Harada, “Observational constraints on a power spectrum from super-inflation in Loop Quantum Cosmology”, accepted  for publication in  Physical Review D, arXiv:0909.0334.

2. Tomohiro Harada, Ken-ichi Nakao and Brien C. Nolan, “Einstein-Rosen waves and the self-similarity hypothesis in cylindrical symmetry”, Phys. Rev. D80(2), 024025 (7/2009)         (15 pp). arXiv:0812.3462

3. Ken-ichi Nakao, Tomohiro Harada, Yasunari Kurita and Yoshiyuki Morisawa, “Relativistic Gravitational Collapse of a Cylindrical Shell of Dust II: Settling Down Boundary Condition”, accepted for publication in Progress of Theoretical Physics, arXiv:0905.3968.

4. Hideki Maeda, Tomohiro Harada and B. J. Carr, "Cosmological wormholes”, Phys.Rev.D79(4), 044034 (2/2009) (10 pp), arXiv:0901.1153.

5. Zahid Ahmed, Tomohiro Harada, Ken-ichi Nakao and M. Sharif, “High-Speed Collapse of a Hollow Sphere of Type I Matter”, Class. Quantum Grav. 26(3), 035007 (1/2009) (15 pp), arXiv:0811.1634

6. Martin Bojowald, Tomohiro Harada and Rakesh Tibrewala, “Lemaitre-Tolman-Bondi collapse from the perspective of loop quantum gravity”, Phys. Rev. D 78(6), 064057 (9/2008) (30 pp), arXiv:0806.2593

7. Masanori Kyo, Tomohiro Harada and Hideki Maeda, "Asymptotically Friedmann self-similar scalar field solutions with potential”, Phys. Rev.  D77(12), 124036 (6/2008) (10 pp), arXiv:0804.1410.

8. Hideki Maeda, Tomohiro Harada and B. J. Carr, "Self-similar cosmological solutions with dark energy II: black holes, naked singularities and wormholes", Phys. Rev. D77(2), 024023 (1/2008) (12 pp), arXiv:0707.0530.

9. Tomohiro Harada, Hideki Maeda and B. J. Carr, "Self-similar cosmological solutions with dark energy I: formulation and asymptotic analysis", Phys. Rev. D77(2), 024022 (1/2008) (13 pp), arXiv:0707.0528.

10.         Ashutosh Mahajan, Tomohiro Harada , Pankaj S. Joshi and Ken-ichi Nakao, "Critical Collapse of Einstein Cluster", Prog. Theor. Phys. 118(5), 865-878 (11/2007), arXiv:0710.4315.

11.         Hiromi Saida, Tomohiro Harada and Hideki Maeda, "Black Hole Evaporation in an Expanding Universe", Class. Quantum Grav. 24(18), 4711-4732 (9/2007), arXiv:0705.4012.

12.         Tomohiro Harada and Ashutosh Mahajan, "Analytical solutions for black-hole critical behaviour", Gen. Rel. Grav. 39, 1847-1854, (8/2007) arXiv:0707.3000.

13.         Ken-ichi Nakao, Yasunari Kurita, Yoshiyuki Morisawa and Tomohiro Harada , "Relativistic Gravitational Collapse of Cylindrical Dust", Prog. Theor. Phys. 117(1), 75-102 (1/2007), gr-qc/0610039.

14.         Tomohiro Harada , "Is there a black hole minimum mass?", Phys. Rev. D74(8), 084004 (10/2006) (4 pp), gr-qc/0609055.

15.         Tomohiro Harada , Hideki Maeda and B. J. Carr, "Non-existence of self-similar solutions containing a black hole in a universe with a stiff fluid or scalar field or quintessence", Phys. Rev. D74(2), 024024 (7/2006) (17 pp). astro-ph/0604225.

16.         Tomohiro Harada and B. J. Carr, "Super-horizon primordial black holes", Phys. Rev. D72(4), 044021 (8/2005) (12 pp), astro-ph/0508122.

17.         Tomohiro Harada and B. J. Carr, "Growth of primordial black holes in a universe containing a massless scalar field", Phys. Rev. D71(10), 104010 (5/2005) (16 pp), astro-ph/0412135.

18.         Tomohiro Harada and B. J. Carr, "Upper limits on the size of primordial black holes", Phys. Rev. D71(10), 104009 (5/2005) (9 pp), astro-ph/0412134.

19.         Hideki Maeda, Takashi Torii and Tomohiro Harada , "Novel Cauchy-horizon instability", Phys. Rev. D71(6), 064015 (3/2005) (6 pp), gr-qc/0501042.

20.         Umpei Miyamoto, Hideki Maeda and Tomohiro Harada , "Quantum Effect and Strength of Naked Singuarities", Prog. Theor. Phys. 113(3), 513-533 (3/2005), gr-qc/0411100.

21.         Hideo Iguchi, Tomohiro Harada and Filipe C Mena, "Spherically symmetric perfect fluid in area-radial coordinates", Class. Quantum Grav. 22(5), 841-853 (3/2005), gr-qc/0405026.

22.         Hideki Maeda and Tomohiro Harada , "Kink instability and stabilization of the Friedmann universe with scalar fields", Phys. Lett. B607(1-2), 8-16 (2/2005), gr-qc/0412040

23.         Tomohiro Harada and Ken-ichi Nakao, "Border of spacetime", Phys. Rev. D70(4), 041501(R) (8/2004) (3 pp). gr-qc/0407034

24.         Umpei Miyamoto and Tomohiro Harada, "Semiclassical instability of the Cauchy horizon in self-similar collapse", Phys. Rev. D69(10), 104005 (5/2004) (10 pp). gr-qc/0312080

25.         Hajime Sotani, Kazunori Kohri and Tomohiro Harada, "Restricting quark matter models by gravitational wave observation", Phys. Rev. D69(8), 084008 (4/2004) (10 pp). gr-qc/0310079

26.         Tomohiro Harada and Hideki Maeda, "Stability Criterion for Self-Similar Solutions with a Scalar Field and Those with a Stiff Fluid in General Relativity", Class. Quantum Grav. 21(2), 371-390 (12/2003). gr-qc/0311014

27.         Hideki Maeda, Tomohiro Harada, Hideo Iguchi and Naoya Okuyama, "A Classification of Kinematic Self-Similar Perfect-Fluid Solutions II", Prog. Theor. Phys. 110(1), 25-63 (7/2003). gr-qc/0304044

28.         Hajime Sotani and Tomohiro Harada, "Nonradial oscillations of quark stars", Phys. Rev. D68(2), 024019 (7/2003) (10 pp).gr-qc/0307035

29.         Tomohiro Harada, Hideo Iguchi and Masaru Shibata, "Computing gravitational waves from slightly nonspherical stellar collapse to black hole: Odd-parity perturbation", Phys. Rev. D68(2), 024002 (7/2003) (21 pp). gr-qc/0305058

30.         Tomohiro Harada, Hideki Maeda and Benoit Semelin, "Criticality and convergence in Newtonian collapse", Phys. Rev. D67(8), 084003 (4/2003) (10 pp). gr-qc/0210027

31.         Tomohiro Harada, C. Goymer and B.J. Carr, "Tolman-Bondi collapse in scalar-tensor theories as a probe of gravitational memory", Phys. Rev. D66(10), 104023 (11/2002) (9 pp). astro-ph/0112563

32.         Hideki Maeda, Tomohiro Harada, Hideo Iguchi and Naoya Okuyama, "A Classification of Spherically Symmetric Kinematic Self-Similar Perfect-Fluid Solutions", Prog. Theor. Phys. 108(5), 819-851 (11/2002). gr-qc/0207120

33.         Takashi Tamaki, Tomohiro Harada, Umpei Miyamoto and Takashi Torii, "Particle velocity in noncommutative spacetime", Phys. Rev. D66(10), 105003 (11/2002) (6 pp). gr-qc/0208002

34.         Hideki Maeda, Tomohiro Harada, Hideo Iguchi and Naoya Okuyama, "No go theorem for kinematic self-similarity with a polytropic equation of state", Phys. Rev. D66(2), 027501 (7/2002) (4 pp). gr-qc/0204039

35.         Tomohiro Harada, Hideo Iguchi and Ken-ichi Nakao, "Physical Processes in Naked Singularity Formation", Prog. Theor. Phys. 107(3), 449-524 (3/2002). gr-qc/0204008

36.         Takashi Tamaki, Tomohiro Harada, Umpei Miyamoto and Takashi Torii, "Have we already detected astrophysical symptoms of space-time noncommutativity?", Phys. Rev. D65(8), 083003 (3/2002) (7 pp). gr-qc/0111056

37.         Hideki Maeda and Tomohiro Harada "Critical phenomena in Newtonian gravity", Phys. Rev. D64(12), 124024 (11/2001) (7 pp). gr-qc/0109095

38.         Tomohiro Harada, "Stability criterion for self-similar solutions with perfect fluids in general relativity", Class. Quantum Grav. 18(21), 4549-4568 (11/2001). gr-qc/0109042

39.         Tomohiro Harada, "Reconstructing the equation of state for cold nuclear matter from the relationship of any two properties of neutron stars", Phys. Rev. C64(4), 048801 (9/2001) (3 pp). astro-ph/0108410

40.         Hideo Iguchi and Tomohiro Harada, "Physical aspects of naked singularity explosion -- How does a naked singularity explode ? --", Class. Quantum Grav. 18(17), 3681-3699 (9/2001) gr-qc/0107099

41.         Tomohiro Harada, Hideo Iguchi, Ken-ichi Nakao, T.P. Singh, Takahiro Tanaka and Cenalo Vaz, "Naked singularities and quantum gravity", Phys. Rev. D64(4), 041501(R) (7/2001) (5 pp). gr-qc/0010101

42.         Tomohiro Harada and Hideki Maeda, "Convergence to a self-similar solution in general relativistic gravitational collapse", Phys. Rev. D63(8), 084022 (3/2001) (14 pp). gr-qc/0101064

43.         Ken-ichi Nakao, Hideo Iguchi and Tomohiro Harada, "Newtonian analysis of gravitational waves from naked singularity", Phys. Rev. D63(8), 084003 (3/2001) (15 pp). gr-qc/0006057

44.         Ken-ichi Nakao, Tomohiro Harada, Masaru Shibata, Seiji Kawamura and Takashi Nakamura, "Response of interferometric detectors to scalar gravitational waves", Phys. Rev. D63(8), 082001 (3/2001) (14 pp). gr-qc/0006079

45.         Hideaki Kudoh, Tomohiro Harada and Hideo Iguchi, "Birth of timelike naked singularity", Phys. Rev. D62(10), 104016 (10/2000) (10 pp). gr-qc/0006089

46.         Tomohiro Harada, Hideo Iguchi and Ken-ichi Nakao, "Power, energy, and spectrum of a naked singularity explosion", Phys. Rev. D62(8), 084037 (9/2000) (17 pp). gr-qc/0005114

47.         Nobuyuki Sakai, Ken-ichi Nakao and Tomohiro Harada, "Causal structure of an inflating magnetic monopole", Phys. Rev. D61(12), 127302, (5/2000) (4 pp). gr-qc/9909027

48.         Tomohiro Harada, Hideo Iguchi and Ken-ichi Nakao, "Naked singularity explosion", Phys. Rev. D61(10), 101502(R), (4/2000) (4 pp). gr-qc/0003036

49.         Hideo Iguchi, Tomohiro Harada and Ken-ichi Nakao, "Gravitational Radiation from a Naked Singularity II -- Even-Parity Perturbation --", Prog. Theor. Phys. 103(1), 53-72 (1/2000). gr-qc/9911063

50.         Norimasa Sugiura, Ken-ichi Nakao and Tomohiro Harada, "Distance-redshift relation in an isotropic inhomogeneous universe II: Spherically symmertic dust-shell universe", Phys. Rev. D60(10), 103508 (10/1999) (14 pp). gr-qc/9911090

51.         Tomohiro Harada, Ken-ichi Nakao and Hideo Iguchi, "Nakedness and curvature strength of shell-focusing singularity in the spherically symmetric space-time with vanishing radial pressure", Class. Quantum Grav. 16(8), 2785-2796 (8/1999). gr-qc/9904073

52.         Hideo Iguchi, Tomohiro Harada and Ken-ichi Nakao, "Gravitational Radiation from a Naked Singularity -- Odd-Parity Perturbation --", Prog. Theor. Phys. 101(6), 1235-1252 (6/1999). gr-qc/9904064

53.         Tomohiro Harada, "Final fate of the spherically symmetric collapse of a perfect fluid", Phys. Rev. D58(10), 104015 (10/1998) (10 pp). gr-qc/9807038

54.         Norimasa Sugiura, Ken-ichi Nakao and Tomohiro Harada, "Distance-redshift relation in an isotropic inhomogeneous universe: Spherically symmertic dust-shell universe", Phys. Rev. D58(10), 103504 (10/1998) (12 pp). gr-qc/9808012

55.         Tomohiro Harada, Hideo Iguchi and Ken-ichi Nakao, "Naked singularity formation in the collapse of a spherical cloud of counterrotating particles", Phys. Rev. D58(4), 041502(R) (7/1998) (5 pp). gr-qc/9805071

56.         Hideo Iguchi, Ken-ichi Nakao and Tomohiro Harada, "Gravitational waves around a naked singularity: Odd-parity perturbation of Lema\^{\i}tre-Tolman-Bondi space-time", Phys. Rev. D57(12), 7262-7273 (5/1998). gr-qc/9804015

57.         Tomohiro Harada, "Neutron stars in scalar-tensor theories of gravity and catastrophe theory", Phys. Rev. D57(8), 4802-4811 (3/1998). gr-qc/9801049

58.         Tomohiro Harada, "Stability Analysis of Spherically Symmetric Star in Scalar-Tensor Theories of Gravity", Prog. Theor. Phys. 98(2), 359-379 (8/1997). gr-qc/9706014

59.         Tomohiro Harada, Takeshi Chiba, Ken-ichi Nakao and Takashi Nakamura, "Scalar gravitational wave from Oppenheimer-Snyder collapse in scalar-tensor theories of gravity", Phys. Rev. D55(4), 2024-2037 (2/1997). gr-qc/9611031

Book Chapter

Hideki Maeda and Tomohiro Harada, "Kinematic self-similar solutions in general relativity", in "General Relativity Research Trends. Horizons in World Physics, Volume 249", (Nova Science Publishers, New York, USA, 2005). gr-qc/0405113

Publication in Journal Supplement

Takeshi Chiba, Tomohiro Harada and Ken-ichi Nakao, "Gravitational Physics in Scalar-Tensor Theories -- Tests of Strong Field Gravity --", Prog. Theor. Phys. Suppl. 128, 335-372 (12/1997).

Publication in International Conference Proceedings

1.     Tomohiro Harada, "Singularities and self-similarity in gravitational collapse ", a plenary talk given at the Hayashibara Forum at IHES on Singularities, 20-23 Nov 2006, Bures-sur-Yvette, France, Advanced Studies in Pure Mathematics 55, 15-30 (2009) (refereed). arXiv:0904.4770

2.     Tomohiro Harada, "Self-similar  black holes in an accelerated universe",  in “Physics and Mathematics of Gravitation: the Proceedings of the Spanish Relativity Meeting 2008, 15 - 19 Sep 2008, Salamanca, Spain”, ed. K.E. Kunze, M. Mars and M.A. Vazquez-Mozo, AIP Conf. Proc.1122, 288-291 (2009).

3.     Seiji Kawamura et al. (31st among 135 authors), “The Japanese space gravitational wave antenna – DECIGO”, J.Phys.Conf.Ser. 122, 012006 (8pp) (2008).

4.     Masaki Ando et al. (31st among 135 authors), “DECIGO pathfinder”, J.Phys.Conf.Ser. 120, 032005 (5pp) (2008).

5.     Tomohiro Harada, "Self-similar cosmological solutions with dark energy I: formulation and asymptotic analysis ", the Proceedings of the 8th International Conference on Gravitation and Astrophysics, 29 Aug -1 Sep 2007, Nara Women's University, Nara, Japan, Press section of ICGA8, Nara women’s University, 19p-20p (2008).

6.     Tomohiro Harada, "Black Hole Evaporation in a Friedmann Universe", the Proceedings of the 8th International Conference on Gravitation and Astrophysics, 29 Aug -1 Sep 2007, Nara Women's University, Nara, Japan, Press section of ICGA8, Nara women’s University, 21p-22p (2008).

7.     Tomohiro Harada, "Black Holes in Scalar Field or Quintessential Cosmology", the Proceedings of the Eleventh Marcel Grossmann Meeting on General Relativity, July 23-29, 2006, Berlin, Germany, ed. H. Kleinert, R.T. Jantzen and R. Ruffini (World Scientific, Singapore, 2008) , p. 1113.

8.     Tomohiro Harada, "Growth of Primordial Black Holes", in "Gravitation and Astrophysics: On the Occasion of the 90th Year of General Relativity", the Proceedings of the Seventh Asia-Pacific International Conference on Gravitation and Astrophysics", Nov 23-26, 2005, Chungli, Taiwan, ed. J. M. Nester, C-M. Chen and J-P. Hsu (World Scientific, Singapore, 2006), p.253.

9.     Tomohiro Harada, "Super-horizon primordial black holes: How do they grow?", J. Phys.: Conf. Ser. 31 (2006) 111-114: Proceedings of the Third 21st Century COE Symposium on Physics of Self-organization System: Astrophysics and Interdisciplinary Science, Sep 1-3, 2005, Tokyo, Japan, ed. K. Maeda, S. Yamada and T. Daishido. J. Phys. Server

10.  S. Kawamura et al. (28th among 108 authors), "The Japanese space gravitational wave antenna -- DECIGO", Class. Quantum Grav. 23(8), S125-S131 (4/2006) (refereed). CQG Server

11.  Tomohiro Harada, Hideo Iguchi and Filipe C. Mena, "Spherically Symmetric Perfect Fluid Collapse in Area-Radial Coordinates", Proceedings of the International Workshop "Dynamics and Thermodynamics of Blackholes and Naked Singularities", May 13-15, 2004, Milan, Italy, ed. L. Fatibene, M. Francaviglia, R. Giambo' and G. Magli, gr-qc/0512092

12.  Hideki Maeda and Tomohiro Harada, "Stability criterion for self-similar solutions with a scalar field and those with a stiff fluid in general relativity", Journal of the Korean Physical Society 45, S90-S94 (2004) as Proceedings of VIth APCTP International Conference of Gravitation and Astrophysics.

13.  Tomohiro Harada, "Gravitational Collapse and Naked Singularities", Pramana 63(4), 741-754 (10/2004), as Proceedings of the 5th International Conference on Gravitation and Cosmology, Jan 5-10, 2004, Cochin, India, ed. by B.R. Iyer, V. Kuriakose and C.V. Vishveshwara. gr-qc/0407109

14.  Tomohiro Harada, "Stability Criterion for Self-Similar Solutions in General Relativity", Proceedings of the Fifth RESCEU International Symposium on New Trends in Theoretical and Observational Cosmology, Nov 13-16, 2001, Tokyo, Japan, ed. K. Sato and T. Shiromizu (Universal Academy Press, Tokyo, Japan 2002), p.273. postscript

15.  Tomohiro Harada, Hideo Iguchi and Ken-ichi Nakao, "Naked Singularity Explosion",  Proceedings of the Ninth Marcel Grossmann Meeting on General Relativity, July 2-8, 2000, Rome, Italy, ed. R.T. Jantzen, V. Gurzadyan and R. Ruffini (World Scientific, Singapore, 2002), p.1346. postscript

Publication in Regional Conference Proceedings

1.     Tomohiro Harada, "Self-similar cosmological solutions with dark energy", to appear in Proceedings of the 17th Workshop on General Relativity and Gravitation, 3 – 7 Dec 2007, Nagoya, Japan.

2.     Tomohiro Harada, "Non-existence of self-similar black hole in a universe with a scalar field or quintessence", to appear in Proceedings of the 16th Workshop on General Relativity and Gravitation, Nov 27 - Dec 1, 2006, Niigata, Japan.

3.     Tomohiro Harada, "Super-horizon primordial black hole and its evolution", in Proceedings of the 15th Workshop on General Relativity and Gravitation, Nov 28 - Dec 2, 2005, Tokyo, Japan, ed. T. Shiromizu, H. Yoshino, A. Hosoya, T. Nakamura and M. Sasaki, pp. 88-91.

4.     Tomohiro Harada, "Self-Similar Solutions, Critical Behavior and Convergence to Attractor in Gravitational Collapse", Proceedings of the 12th Workshop on General Relativity and Gravitation, Nov 25 - 28, 2002, Tokyo, Japan, ed. M. Shibata, Y. Eriguchi, K. Taniguchi, T. Nakamura and K. Tomita, p123. gr-qc/0302004

5.     Tomohiro Harada, "Stability of Self-Similar Solutions with Perfect Fluids", Proceedings of the 11th Workshop on General Relativity and Gravitation, Jan 9-12, 2002, Tokyo, Japan, ed. J. Koga, K. Maeda, T. Nakamura and K. Tomita,  p.73. pdf

6.     Tomohiro Harada, B.J. Carr and C.A. Goymer, "Gravitational Memory ? -- a Perturbative Analysis --", Proceedings of the Tenth Workshop on General Relativity and Gravitation, Sep 11-14, 2000, Osaka, Japan, ed. M. Sasaki et al., p.14. astro-ph/0102058

7.     Tomohiro Harada, Hideo Iguchi and Ken-ichi Nakao, "Naked Singularity Explosion", Proceedings of the 9th Workshop on General Relativity and Gravitation, Nov 3-6, 1999, Hiroshima, Japan, ed. Y. Eriguchi et al., p.425.

8.     Tomohiro Harada, Hideo Iguchi and Ken-ichi Nakao, "Spherical collapse of counterrotating particles and cosmic censorship", Proceedings of the 8th Workshop on General Relativity and Gravitation, Oct 19-22, 1998, Niigata, Japan, ed. Y. Eriguchi et al., p.377.

9.     Tomohiro Harada, "Neutron Stars in Scalar-Tensor Theories of Gravity and Catastrophe Theory", Proceedings of the 7th Workshop on General Relativity and Gravitation, Oct 27-30, 1997, Kyoto, Japan, ed. Y. Eriguchi et al., p.90.

10.  Tomohiro Harada, Takeshi Chiba, Ken-ichi Nakao and Takashi Nakamura, "Scalar Gravitational Wave from Oppenheimer-Snyder Collapse in Scalar-Tensor Theories of Gravity -An Effective Mass of Scalar Field -", Proceedings of the 6th Workshop on General Relativity and Gravitation, Dec 2-5, 1996, Tokyo, Japan, ed. H. Ishihara et al., p.196.

Preprint

Rohta Takahashi and Tomohiro Harada, submitted.

 

Thesis

Tomohiro Harada, "Final Fate of Generic Gravitational Collapse -- Is Shell-Focusing Naked Singlarity Realized ? --",  Department of Physics, Graduate School, Kyoto University, Doctor of Science, March 1999.

Tomohiro Harada, "Scalar gravitational waves from the spherically symmetric dust collapse" (in Japanese), Department of Physics, Graduate School, Kyoto University, Master of Science, March 1996.

Publication in Journal in Japanese

協力　井田大輔, 黒田和明, 白水徹也, 中尾憲一, 原田知広, 福江純, 「ブラックホール、ホワイトホール」, ニュートン2008年3月号12頁 （ニュートンプレス）

原田知広, 「原始ブラックホールの形成と成長」, 日本物理学会誌第62巻第1号30頁（2007年1月）

原田知広, 「重力崩壊と自己相似仮説」, 日本物理学会誌第59巻第3号175頁（2004年3月）

Book in Japanese

監修　福江純　協力　井田大輔, 黒田和明, 白水徹也, 中尾憲一, 原田知広, 二間瀬敏史, 「ブラックホール　ホワイトホール―正反対の顔をもつ「時空の二つの穴」 (ニュートンムック Newton別冊サイエンステキストシリーズ) 　（ニュートンプレス）（2008年5月）

Miscellaneous Articles

原田知広、「自然科学教育研究室・情報科学教育研究室合同科目担当者連絡会報告」、全カリニューズレターNo.25、p.2（立教大学全学共通カリキュラム運営センター）（2009年3月31日）

原田知広、「編集後記」、日本物理学会誌第63巻第6号481頁（2008年6月）

原田知広、「論文の書き方」、2000年 天文天体物理若手夏の学校（神奈川県葉山町総合研究大学院大学、2000年8月17日-21日）、招待講演集録用原稿 (2000年8月). pdf