Staff -OJIMA, Izumi-
Name OJIMA, Izumi
Position Associate Professor
E-Mail ojima (email address: add @kurims.kyoto-u.ac.jp)
Continuing his project for a unified description of the interplay between Micro and Macro aspects in physical nature, Izumi Ojima has succeeded in formulating a general theoretical and methodological framework called "quadrality scheme", which embodies the categorical essence of adjunctions between monads and co-monads. In this scheme, not only a mathematical formulation of measurement processes is achieved in terms of instruments associated with composite systems of object and measurement systems, but also a systematic treatment of spontaneously or explicitly broken symmetries is incorporated. Owing to the latter, it has become possible to describe mathematically an emergence process of macroscopic spacetime from the microscopic quantum systems.