Affleck–Kennedy–Lieb–Tasaki Model

Work Statistics across a Quantum Phase Transition

“…In the following, they are applied in analyzing the scaling behaviour of the work distribution during a linear quench. Scaling behavior in the characteristic function of work.-We define the work applied during the quench on the basis of the usual two-time measurement scheme, i.e., as the difference between the results of the projective measurements [34][35][36][37][38] of the system's energy before and after the linear quench. It is a stochastic quantity with a distribution function PðwÞ, and the logarithm of its characteristic function [the Fourier transform of PðwÞ], called the cumulant CFW, reads…”