Eigenvalues of the FIM for the AQS model
, evaluated for a
lattice of spins for thermal states with
(a) shows the symmetry of the model. Couplings that lie in the same orbit (under the reflections and rotations that leave the quantum simulation model unchanged) are identically colored. (b) shows eigenvalues of the FIM, with the five eigenvalues of largest magnitude shown in color. (c) shows the form of the influential CPD for \(\beta=10\).