Haag Duality for 2D Quantum Spin Systems - Glass Room (Moore library)

Add to your list(s) Download to your calendar using vCal

• Yoshiko Ogata (Kyoto University)
• Wednesday 24 September 2025, 10:00-11:00
• External.

If you have a question about this talk, please contact nobody.

BID - Quantum field theory with boundaries, impurities, and defects

Doplicher–Haag–Roberts (DHR) theory in algebraic quantum field theory allows us to derive a braided C^{-tensor category under the assumption of Haag duality. Recently, DHR theory has been applied to the study of topological phases of matter in two-dimensional quantum spin systems. The strength of DHR theory in this context is that it provides a framework to describe anyons as invariants of topological order. However, Haag duality is a necessary input, and it is not known whether it holds in general. In this talk, I will report on our recent results with David Pérez-García and Alberto Ruiz-de-Alarcón concerning Haag duality in two-dimensional tensor network states based on biconnected C}-weak Hopf algebras.  

This talk is part of the Isaac Newton Institute Seminar Series series.

This talk is included in these lists:

• All CMS events
• External
• Featured lists
• INI info aggregator
• Isaac Newton Institute Seminar Series
• School of Physical Sciences
• bld31

Note that ex-directory lists are not shown.