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Professor Tanaka has conducted a number of pioneering, systematic studies concerning the behavior of gravity in the brane-world model and has made internationally-acclaimed achievements. The physics of spacetime was initiated by Einstein in his theory of general relativity, and its validity in classical terms has been proven by various observations. By contrast, according to the new cosmology based on string theory, known as the "brane model," it has been predicted that spacetime has more than four dimensions and that our universe is realized on a 3+1-dimensional membrane-like object moving inside, referred to as a "brane." Professor Tanaka has been leading the development of this new cosmology. If our "brane" is inside spacetime with more than four dimensions, gravity should propagate along the brane as well as through the extra dimensions. Consequently, the law of gravitation deviates from Einstein's theory with respect to the gravity observed in the world inside the brane where we live. Professor Tanaka developed a new perturbative computation scheme to study this deviation precisely, and his results can be used to quantitatively capture the evidence of extra dimensions through observations for the first time. His research achievement has been recognized to be epoch-making in this respect.
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PHYSICA SCRIPTAno. 3 (2024)
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration,R. Abbott,H. Abe, F. Acernese, K. Ackley,S. Adhicary, N. Adhikari,R. X. Adhikari, V. K. Adkins,V. B. Adya,
arxiv(2023)
arXiv (Cornell University) (2023)
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