2021
04/30
OPEN
Date
2021/04/30（Fri）15:00〜16:00
Venue
zoom
Speaker
Dr. Ryohei Kobayashi ( The Institute for Solid State Physics, The University of Tokyo )
Language
English
URL
Contact
ryokokur-AT-poat.kek.jp
Overview
In this talk, we discuss a recipe to produce a lattice construction of fermionic topological phases of matter on unoriented spacetime, which plays a crucial role to study topological phases or anomalies based on the time reversal symmetry. As an application, we construct a gapped boundary for a large class of fermionic SPT phases protected by finite onsite symmetry, based on our path integral description in the presence of boundaries. We will also formulate a local path integral for the (1+1)d topological superconductor in class BDI classified by Z8, and discuss its application to the problem of finding non-local order parameter for the Z8 classification if time permits.