Speaker
Dr
Sascha Gehrmann
(University of Oxford)
Description
Baxter’s original proof of XYZ integrability relies on the Yang–Baxter equation. Here, we present another route by constructing a simple matrix-product operator that generates an extensive hierarchy of conserved charges commuting with the XYZ Hamiltonian, naturally extending to integrable defects and arbitrary boundary conditions.
The construction is intimately connected to the exact strong zero mode (ESZM) of the XYZ chain—an operator localized at the boundary—which induces infinite edge coherence times. Building on this connection, we derive exact strong zero modes in more general integrable systems.
Author
Dr
Sascha Gehrmann
(University of Oxford)