Autorentext

Kantaro Ohmori is a member of the Institute for Advanced Study, USA. He received his Bachelor, Master and Doctor of Science degrees from the University of Tokyo in 2012, 2014 and 2016, respectively. After completing his PhD, he moved to the current institute. His research interests include various issues in string theory and quantum field theory.

Klappentext

This thesis describes the structures of six-dimensional (6d) superconformal field theories and its torus compactifications. The first half summarizes various aspects of 6d field theories, while the latter half investigates torus compactifications of these theories, and relates them to four-dimensional superconformal field theories in the class, called class S. It is known that compactifications of 6d conformal field theories with maximal supersymmetries provide numerous insights into four-dimensional superconformal field theories. This thesis generalizes the story to the theories with smaller supersymmetry, constructing those six-dimensional theories as brane configurations in the M-theory, and highlighting the importance of fractionalization of M5-branes. This result establishes new dualities between the theories with eight supercharges.

Inhalt
Introduction.- Six Dimensional Superconformal Field Theories.- Circle and Torus Compactications.- Conclusion.