Berkeley-iTHEMS Seminar by Dr. T.Tada
- 2019年5月1日15:40 - 17:30
- 多田 司 (数理創造プログラム コーディネーター / 理化学研究所 仁科加速器科学研究センター 量子ハドロン物理学研究室 副主任研究員)
Title: Three quantizations of conformal field theory
Needless to say, conformal field theory is elemental in the study of string theory, statistical quantum systems, and various quantum field theories.
Two-dimensional conformal field theory is usually quantized by the so-called radial quantization. However, this is not the only way. As a matter of fact, there are two other distinctive choices for the time foliation, or equivalently, the Hamiltonian. One of these choices yields the continuous Virasoro algebra, while the other choice leads to the Virasoro algebra on a torus. The former case corresponds to the recently found (and perhaps less known) phenomenon, sine-square deformation. The latter yields the well-known entanglement entropy. I will present a comprehensive treatment of these three quantizations and discuss its physical implications.