Network of collaborations

Here is the list of people I worked with (excluding people
assocaited with observational projects).

I have more than 130 collaborators in
Japan, United Kingdom, Germany, Italy, France, Switzerland,
Spain, Portugal, Greece, Belgium,
Netherlands, Denmark, Norway,
Hungary, Russia,
USA, Mexico, South Africa, India, Korea, China,
Taiwan, Thailand, Iran, Brazil, and Columbia.


1.  Kei-ichi Maeda (Waseda, Japan)

2.  Takashi Torii (Waseda, Japan)

3.  Bruce A. Bassett (Capetown, South Africa)

4.  Fermin Viniegra (Oxford, UK)

5.  Hiroki Yajima (Waseda, Japan)

6.  Giuseppe Pollifrone (Queenmary, UK)

7.  Shuntaro Mizuno (Waseda, Japan)

8.  Alexei Starobinsky (Landau Institute, Russia)

9.  Jun'ichi Yokoyama (Univ. of Tokyo, Japan)

10. Marco Peloso (Bonn, Germany)

11. Lorenzo Sorbo (SISSA, Italy)

12. Alexey Toporensky (Moscow state University, Russia)

13. Robert Brandenberger (Brown, USA)

14. Fabio Finelli (Bologna, Italy)

15. David Parkinson (Portsmouth, UK)

16. Monica Borunda (SISSA, Italy)

17. Marco Serone (Sissa, Italy)

18. Tsuneto Kanai (Tokyo, Japan)

19. Roy Maartens (Portsmouth, UK)

20. Parampreet Singh (IUCAA, India)

21. Yun-Song Piao (Bejing, China)

22. Xin-min Zhang (Bejing, China)

23. Andrew R. Liddle (Sussex, UK)

24. Burin Gumjudpai (Naresuan, Thailand)

25. Mohammad R. Garousi (Tehran, Iran)

26. M. Sami (Pune, India)

27. Federico Piazza (Milan, Italy)

28. Gianluca Calcagni (Parma, Italy)

29. Luca Amendola  (Roma observatory, Italy)

30. David Wands (Portsmouth, UK)

31. Edmund Copeland (Nottingham, UK)

32. Jin Yoshida (Waseda, Japan)

33. Shin'ichi Nojiri (Nagoya university, Japan)

34. Sergei D. Odintsov (Barcelona ICREA, Spain)

35. Tapan Naskar (IUCAA, India)

36. Peter Tretjakov (Moscow state University, Russia)

37. Soo A. Kim (Sussex, UK)

38. Sudhakar Panda (Harish-Chandra Research Institute, India)

39. John Ward (Queen Mary, UK)

40. David Polarski (Montpellier, France)

41. Miguel Quartin (Federal of Rio de Janeiro, Brazil)

42. Ioav Waga (Federal of Rio de Janeiro, Brazil)

43. Reza Tavakol (Queen Mary, UK)

44. Stephane Fay (Queen Mary, UK)

45. Radouane Gannouji (Montpellier, France)

46. Nobuyoshi Ohta (Kinki Univeristy, Japan)

47. Zong-kuan Guo (Kinki Univeristy, Japan)

48. Maxim Libanov (Russian Academy of Science, Russia)

49. Valery Rubakov (Russian Academy of Science, Russia)

50. Eleftherios Papantonopoulos (University of Athens, Greece)

51. Kotub Uddin (Queen Mary, UK)

52. Salvatore Capozziello (Naple, Italy)

53. Takayuki Tatekawa (Kougakuin, Japan)

54. Kazuharu Bamba (National Tsing Hua University, Taiwan)

55. Takashi Tamaki (Waseda, Japan)

56. Antonio De Felice (University of Louvain, Belgium)

57. Bruno Moraes (Montpellier, France)

58. Chao-Qiang Geng (National Tsing Hua University, Taiwan)

59. Junko Ohashi (Tokyo University of Science, Japan)

60. Savvas Nesseris (Niels Bohr International Academy, Denmark)

61. David F. Mota (University of Oslo, Norway)

62. Shinji Mukohyama (IPMU, Japan)

63. Hans A. Winther (University of Oslo, Norway)

64. Ryotaro Kase (Tokyo University of Science, Japan)

65. Martin Bojowald (Pennsylvania State University, USA)

66. Joseph Elliston (Queen Mary, UK)

67. Tsutomu Kobayashi (Kyoto University, Japan)

68. Sergei Ketov (Tokyo Metropolitan University, Japan)

69. Tomonori Totani (Kyoto University, Japan)

70. Hiroyuki Okada (Kyoto University, Japan)

71. Takeshi Chiba (Nihon University, Japan)

72. Jailson Arcaniz (Observatorio Nacional, Brazil)

73. Jiro Soda (Kyoto University, Japan)

74. Sachiko Kuroyanagi (Tokyo University of Science)

75. Leonardo Modesto (Fudan University, China)

76. Fabio Briscese (Rome University, Italy)

77. Laszlo Arpad Gergely (University of Szeged, Hungary)

78. Naoshi Sugiyama (Nagoya University)

79. Jihn E. Kim (Seoul National University, Korea)

80. Yannis K. Semertzidis (IBS, Korea)

81. Mehmet Ozkan (Groningen, Netherlands)

82. Yi Pang (Texas, USA)

83. Kazuya Koyama (University of Portsmouth, UK)

84. Lavinia Heisenberg (ETH Zurich, Switzerland)

85. Ying-li Zhang (NAO Beijing, China)

86. Gong-Bo Zhao (NAO Beijing, China)

87. Jose Beltra Jimenez (Marseille, France)

88. Ryo Namba (McGill, Canada)

89. Shintaro Nakamura (Tokyo University of Science, Japan)

90. Masato Minamitsuji (University of Lisbon, Portugal)

91. Chunshan Lin (YITP, Kyoto)

92. Misao Sasaki (YITP, Kyoto)

93. Ines S. Albuquerque (University of Lisbon, Portugal)

94. Noemi Frusciante (University of Lisbon, Portugal)

95. Nelson Nunes (University of Lisbon, Portugal)

96. Hector Ramirez (University of Valencia, Spain)

97. Daniele Vernieri (Technical Univerity of Lisbon, Portugal)

98. Juan P. Beltran Almeida (Antonio Narino University, Columbia)

99. Alejandro Guarnizo (Antonio Narino University, Columbia)

100. Cesar A. Valenzuela-Toledo (del Valle University, Columbia)

101. Simone Peirone (Leiden University, Neitherland)

102. Giampaolo Benevento (Padova University, Italy)

103. Rampei Kimura (Waseda University)

104. Seiga Sato (Waseda University)

105. Tomohiro Fujita (Tokyo University, ICRR)

106. Kai Murai  (Tokyo University, ICRR)

107. Hiromasa Nakatsuka (Tokyo University, ICRR)

108. Dario Bettoni (Salamanca University, Spain)

109. David Figueruelo (Salamanca University, Spain)

110. Floremcia A. Teppa Pannia (Salamanca University, Spain)

111. Chao Zhang (Baylor University, USA)

112. Xiang Zhao (Baylor University, USA)

113. Anzhong Wang (Baylor University, USA)

114. Joshua A. Kable (Jon Hopkins University, USA)

115. Kazufumi Takahashi (YITP, Kyoto)

116. Yurika Higashino (Waseda University)

117. Ratchaphat Nakarachinda (Naresuan University, Thailand)

118. Pitayuth Wongjun (Naresuan University, Thailand)

119. Ryodai Kawaguchi (Waseda University)

120. Katsuki Aoki (YITP, Kyoto)

121. Riccardo Sturani (Sao Paulo, Brazil)

122. Kotaro Mizui (Waseda University)

123. Kiyotomo Ichiki (Nagoya University)

124. Xiaolin Liu (Beijing Normal University, China)

125. Hiroki Takeda (Kyoto University)

126. Atsushi Nishizawa (Hiroshima University)

127. Kazuki Yanagihara (Waseda University)

128. Fumio Uchida (RESCEU, University of Tokyo)

129. Yusuke Yamada (WIAS, Waseda University)

130. Che-Yu Chen (RIKEN)

131. Makoto Amakawa (Waseda University)

132. Robin Fynn Diedrichs (Frankfurt University)

133. Kent Yagi (University of Virginia)

134. Masroor Pookkillath (Mahidol University)