Tadashi Takayanagi

Tadashi Takayanagi (高柳匡, Takayanagi Tadashi); born October 11, 1975 in Tokyo, is a Japanese theoretical physicist. He is a professor at the Yukawa Institute for Theoretical Physics at Kyoto University.

Tadashi Takayanagi
Born	高柳匡 (1975-10-11)11 October 1975 Kawasaki, Kanagawa, Japan
Nationality	Japan
Alma mater	University of Tokyo
Known for	Ryu–Takayanagi conjecture
Awards	Nishinomiya-Yukawa Memorial Prize (2013) New Horizons in Physics Prizes of the Breakthrough Prize in Fundamental Physics (2015) Nishina Memorial Prize (2016) Dirac Medal (ICTP) (2024)
Scientific career
Fields	Theoretical physics
Institutions	Kavli Institute for Theoretical Physics at University of California, Santa Barbara Yukawa Institute for Theoretical Physics at Kyoto University Kavli Institute for the Physics and Mathematics of the Universe
Doctoral advisor	Tohru Eguchi

Career

Takayanagi studied physics at the University of Tokyo, where he received his bachelor's degree in 1998 and his master's degree in 2000, and his doctorate in 2002 under Tohru Eguchi (superstring theory in Melvin background). He was a postdoctoral researcher at Harvard University (Jefferson Physical Laboratory) until 2005 and at the Kavli Institute for Theoretical Physics at University of California, Santa Barbara in 2005/06. In 2006 he became assistant professor, in 2008 associate professor and in 2012 professor in Kyoto. He is also at Kavli Institute for the Physics and Mathematics of the Universe in Kashiwa.

He works on string theory. He is known for a 2006 paper with Shinsei Ryu, later known as the Ryu–Takayanagi conjecture. In that research, they calculated the entropy from quantum entanglement in conformal field theory via the Bekenstein-Hawking entropy of black holes in the context of Juan Maldacena's holographic principle and conformal field theories on a surface correspond to a theory of gravity in the enclosed volume.

Honors and awards

In 2013 he received the Nishinomiya-Yukawa Memorial Prize from the Yukawa Memorial Foundation with Ryu. He received the 2015 New Horizons in Physics Prizes of the Breakthrough Prize in Fundamental Physics with Ryu, Horacio Casini, and Marina Huerta for their "fundamental ideas about entropy in quantum field theory and quantum gravity". In 2016 he was awarded the Nishina Memorial Prize for the "discovery and development of the holographic entanglement entropy formula". In 2024, he was again awarded the Dirac Medal of the ICTP together with Ryu, Horacio Casini, and Marina Huerta for "their insights on quantum entropy in quantum gravity and quantum field theories".

Publication

• Shinsei Ryu, Tadashi Takayanagi: Holographic derivation of entanglement entropy from AdS/CFT, Phys. Rev. Lett., Band 96, 2006, S. 181602, Arxiv
• Tatsuma Nishioka, Shinsei Ryu, Tadashi Takayanagi: Holographic entanglement entropy: an overview, J.Phys. A, Band 42, 2009, S. 504008, Arxiv

External links

• Tadashi Takayanagi's Home Page