CREST Research Seminar on "Theoretical studies of topological phases of matter"
We have an online seminar on "Theoretical studies of topological phases of matter",
which is a research subject in the CREST program
"Creation of Core Technology
based on the Topological Materials Science for Innovative Devices" of Japan Science and Technology Agency.
This is supported by the CREST Grant (Number: JPMJCR19T2)
held by Yasuyuki Kawahigashi (the University of Tokyo)
together with Akira Furusaki (RIKEN) and Masatoshi Sato (Yukawa Institute for Theoretical Physics, Kyoto University).
The aim of this seminar is to foster interactions between mathematicians and physicists and promote joint
research among the CREST group members. We plan to have one talk every month approximately.
Some talks are public and open to everyone, and others are for our CREST group members only.
- Speaker: Mayuko Yamashita (RIMS, Kyoto University)
- Title: The classification problem of non-topological invertible QFT's and
a physically motivated model for the Anderson duals
- Date/Time: 16:00-17:30, Friday, April 23, 2021
- Abstract: Freed and Hopkins conjectured that the deformation classes of
non-topological invertible quantum field theories are classified by a
generalized cohomology theory called the Anderson dual of bordism
theories. The main difficulty of this problem lies in the fact that we do not have the
axioms for QFT's.
In this talk, I will explain the ongoing work to give a new approach
to this conjecture. We construct a new, physically motivated model for the
This model is constructed so that it abstracts a certain property of invertible
QFT's which physicists believe to hold in general.
I will start from basic motivations for the classification problem, report
the progress of our work and explain future directions. This is the joint
work with Yosuke Morita (Kyoto, math) and Kazuya Yonekura (Kyushu,
The talk will be online with Zoom. The Zoom link will be sent by e-mail
to those who have registered on the above form.
If you have any inquiry, please contact Kawahigashi
Records of Past Seminars
Back to the Home Page of Kawahigashi.