4 problems

For every quantum geometric nesting (QGN) model with an exact frustration-free ground state and a spontaneously broken continuous symmetry, the exact stiffness associated with that…

Let $\Lambda$ be the underlying lattice, let $A\subset\Lambda$ be any rectangular region, and let $H_A$ denote the corresponding parent Hamiltonian restricted to $A$. A boundary st…

Quasi-local Araki conjecture. The displayed approximation and norm bounds hold for quasi-local Hamiltonian interactions.

Let a PEPS have a bulk parent Hamiltonian and an associated one-dimensional boundary Hamiltonian. Bulk-boundary gap conjecture. The bulk parent Hamiltonian of the PEPS is gapped if…