Rigorous Lower Bounds on Spectral Gaps of Frustration-Free Quantum Spin Chains

Quand : 17 juillet 2026 à 14:45

Où : IHES

Organisé par : Institut Henri Poincaré

I will present some new results for obtaining rigorous lower bounds on the spectral gap of frustration-free quantum spin chains. Such spin chains are characterized by the fact that their ground state minimizes each local Hamiltonian term individually, and include paradigmatic models such as the AKLT and the Majumdar-Ghosh model. In my talk, I will discuss two new results, which significantly impro